SOCKET COMMUNICATIONS INC
SC 13D, 1998-02-11
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C.  20549


                                  SCHEDULE 13D


                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                           (AMENDMENT NO.    N/A    )*
                                          ----------


                           Socket Communications, Inc.
- -------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
- -------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   833 672 108
                               ------------------
                                 (CUSIP Number)

                                  Kurt Sjoblom
                           Cetronic Aktiebolag (Publ)
                              Kungsholms Strand 147
                               SE-11428 Stockholm
                                     Sweden
- -------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
                                  Communications)


                                January 29, 1997
             -------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

Note: Six copies of this statement, including all exhibits, should be filed with
the Commission.  See Rule 13d-1(a) for other parties to whom copies are to be
sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 2 of 18 Pages


- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 
                                                     Cetronic Aktiebolag (Publ)
- -------------------------------------------------------------------------------
 2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*              (a)  [   ]
                                                                     (b)  [ X ]
- -------------------------------------------------------------------------------
 3    SEC USE ONLY 

- -------------------------------------------------------------------------------
 4    SOURCE OF FUNDS*                                                       WC

- -------------------------------------------------------------------------------
 5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS
      2(d) or 2(e)                                                         [  ]

- -------------------------------------------------------------------------------
 6    CITIZENSHIP OR PLACE OF ORGANIZATION                               Sweden


- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
   NUMBER OF   7     SOLE VOTING POWER                                1,700,000
    SHARES 
 BENEFICIALLY  ----------------------------------------------------------------
   OWNED BY    8     SHARED VOTING POWER
    EACH
  REPORTING    ----------------------------------------------------------------
 PERSON WITH   9     SOLE DISPOSITIVE POWER                           1,700,000

               ----------------------------------------------------------------
               10    SHARED DISPOSITIVE POWER 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON    1,700,000


- -------------------------------------------------------------------------------
  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           [  ]

- -------------------------------------------------------------------------------
  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)                  20.7%

- -------------------------------------------------------------------------------
  14  TYPE OF REPORTING PERSON*                                              CO


- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 3 of 18 Pages

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

      NAME OF REPORTING PERSON 
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 
                                                                     Telenor AS
- -------------------------------------------------------------------------------
 2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*              (a)  [   ]
                                                                     (b)  [ X ]
- -------------------------------------------------------------------------------
 3    SEC USE ONLY 
 
- -------------------------------------------------------------------------------
 4    SOURCE OF FUNDS*                                                       AF
 
- -------------------------------------------------------------------------------
 5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS
      2(d) or 2(e)                                                         [  ]
 
- -------------------------------------------------------------------------------
 6    CITIZENSHIP OR PLACE OF ORGANIZATION                               Norway
 
- -------------------------------------------------------------------------------
   NUMBER OF   7    SOLE VOTING POWER 
    SHARES    
 BENEFICIALLY  ----------------------------------------------------------------
  OWNED BY     8    SHARED VOTING POWER                                 600,000
     EACH
   REPORTING   ----------------------------------------------------------------
 PERSON WITH   9    SOLE DISPOSITIVE POWER

               ----------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER                            600,000

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON      600,000

- -------------------------------------------------------------------------------
  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*   
                                                                           [  ]

- -------------------------------------------------------------------------------
  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)                   8.4%

- -------------------------------------------------------------------------------
  14  TYPE OF REPORTING PERSON*                                              CO

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 4 of 18 Pages

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
      NAME OF REPORTING PERSON 
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 
                                                             Telenor Venture AS
- -------------------------------------------------------------------------------
 2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*              (a)  [   ]
                                                                     (b)  [ X ]
- -------------------------------------------------------------------------------
 3    SEC USE ONLY 

- -------------------------------------------------------------------------------
 4    SOURCE OF FUNDS*                                                       WC

- -------------------------------------------------------------------------------
 5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS
      2(d) or 2(e)                                                         [  ]

- -------------------------------------------------------------------------------
 6    CITIZENSHIP OR PLACE OF ORGANIZATION                               Norway

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
   NUMBER OF   7    SOLE VOTING POWER 
    SHARES 
  BENEFICIALLY ----------------------------------------------------------------
   OWNED BY    8    SHARED VOTING POWER                                 600,000
      EACH
   REPORTING   ----------------------------------------------------------------
  PERSON WITH  9    SOLE DISPOSITIVE POWER

               ----------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER                            600,000

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON      600,000

- -------------------------------------------------------------------------------
  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           [  ]
- -------------------------------------------------------------------------------
  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)                   8.4%


- -------------------------------------------------------------------------------
  14  TYPE OF REPORTING PERSON*                                          CO, IV

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 5 of 18 Pages

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
      NAME OF REPORTING PERSON 
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 
                                                          ForetagsByggarna B.V.

- -------------------------------------------------------------------------------
 2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*              (a)  [   ]
                                                                     (b)  [ X ]

- -------------------------------------------------------------------------------
 3    SEC USE ONLY 


- -------------------------------------------------------------------------------
 4    SOURCE OF FUNDS*                                                       WC

- -------------------------------------------------------------------------------
 5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS
      2(d) or 2(e)                                                         [  ]
 
- -------------------------------------------------------------------------------
 6    CITIZENSHIP OR PLACE OF ORGANIZATION                      The Netherlands
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
   NUMBER OF   7    SOLE VOTING POWER 
    SHARES
  BENEFICIALLY ----------------------------------------------------------------
    OWNED BY   8    SHARED VOTING POWER                                 700,000
      EACH
    REPORTING  ----------------------------------------------------------------
  PERSON WITH  9    SOLE DISPOSITIVE POWER

               ----------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER                            700,000

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON      700,000

- -------------------------------------------------------------------------------
  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*   
                                                                           [  ]
- -------------------------------------------------------------------------------
  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)                  10.1%

- -------------------------------------------------------------------------------
  14  TYPE OF REPORTING PERSON*                                          CO, IV

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 6 of 18 Pages

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
      NAME OF REPORTING PERSON 
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON 
                                                                  Lars Lindgren

- -------------------------------------------------------------------------------
 2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*              (a)  [   ]
                                                                     (b)  [ X ]

- -------------------------------------------------------------------------------
 3    SEC USE ONLY 

- -------------------------------------------------------------------------------
 4    SOURCE OF FUNDS*                                                       AF

- -------------------------------------------------------------------------------
 5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS
      2(d) or 2(e)                                                         [  ]
 
- -------------------------------------------------------------------------------
 6    CITIZENSHIP OR PLACE OF ORGANIZATION                              Swedish
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
   NUMBER OF   7    SOLE VOTING POWER                                       -0-
    SHARES 
  BENEFICIALLY ----------------------------------------------------------------
   OWNED BY    8    SHARED VOTING POWER                                 700,000
    EACH
  REPORTING    ----------------------------------------------------------------
 PERSON WITH   9    SOLE DISPOSITIVE POWER                                  -0-

               ----------------------------------------------------------------
               10   SHARED DISPOSITIVE POWER                            700,000

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

  11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON      700,000

- -------------------------------------------------------------------------------
  12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*   
                                                                           [  ]

- -------------------------------------------------------------------------------
  13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)                  10.1%


- -------------------------------------------------------------------------------
  14  TYPE OF REPORTING PERSON*                                              IN

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 7 of 18 Pages


ITEM 1.    SECURITY AND ISSUER.

(a)    Common Stock

(b)    Socket Communications, Inc.
       37400 Central Court
       Newark, CA 94560

ITEM 2.    IDENTITY AND BACKGROUND.

The information in this Item 2, as well as the information under Items 3, 4, 5
and 6, is provided for each reporting person and for each person for whom
information is required to be provided by General Instruction C to Schedule 13D
(Reg. Section 240.13d-101).

CETRONIC AKTIEBOLAG (PUBL)

(a)    Cetronic Aktiebolag (Publ), a corporation formed under the laws of Sweden
       ("CETRONIC")

(b)    Kungsholms Strand 147
       SE-11428 Stockholm
       Sweden

(c)    Develops and markets software and hardware for wireless communications
       markets.

(d)    During the last five years, Cetronic has not been convicted in a criminal
       proceeding.

(e)    During the last five years, Cetronic was not a party to a civil
       proceeding of a judicial or administrative body as a result of which
       Cetronic was or is subject to a judgment, decree or final order enjoining
       future violations of, or prohibiting or mandating activities subject to,
       federal or state securities laws or finding any violation with respect to
       such laws.

EXECUTIVE OFFICERS AND DIRECTORS OF CETRONIC

(a), (b), (c) and (f)  The following sets forth the name, citizenship, business
address and present principal occupation of each of the directors and executive
officers of Cetronic.  Each of the directors and executive officers of Cetronic
with the exception of Thor O. Olsen and Per-Christian Berntsen is a citizen of
Sweden.  Mr. Olsen and Mr. Berntsen are citizens of Norway.

Name and Business Address       Present Principal Occupation
- -------------------------       ----------------------------

Directors and Executive Officers of Cetronic
- --------------------------------------------

Jorgen Friman                        Managing Director
Kungsholms Strand 147
SE-11428 Stockholm
Sweden

Kurt Sjoblom                         Consultant to Cetronic
Kungsholms Strand 147
SE-11428 Stockholm
Sweden

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 8 of 18 Pages


Jan Erik Larsson                     Owner of Jelka
Thulegatan 25, 1 tr                  Forvaltning AB
852 36 Sundsvall, Sweden

Thor O. Olsen                        Senior Vice President of
Keysersgt 13                         Telenor Venture AS
P.O. Box 6701
St. Olavs Plass
0130 Oslo, Norway

Per-Christian Berntsen               Vice President, Seatex AS
Universitetsgt 7
P.O. Box 6746
St. Olavs Plass
0130 Oslo, Norway

Lars Lindgren                        Partner in ForetagsByggarna AB
Norrmalmstorg 14
111 46 Stockholm, Sweden

Martin Gemvik                        Partner in
Norrmalmstorg 14                     ForetagsByggarna AB
111 46 Stockholm, Sweden

Jan Ramkvist                         Partner in
Linnegatan 2                         Advokatfirman Fylgia KB
P.O. Box 55555
S-10204 Stockholm, Sweden

(d)    During the last five years, none of the above executive officers and
       directors of Cetronic has been convicted in a criminal proceeding.

(e)    During the last five years, none of the above executive officers and
       directors of Cetronic has been a party to a civil proceeding of a
       judicial or administrative body as a result of which such executive
       officer or director was or is subject to a judgment, decree or final
       order enjoining future violations of, or prohibiting or mandating
       activities subject to, federal or state securities laws or finding any
       violation with respect to such laws.

TELENOR AS

(a)    Telenor AS, a corporation formed under the laws of Norway.

(b)    Universitetsgt 2
       P. O. Box 6701
       St. Olavs Plass
       0130 Oslo, Norway

(c)    Production and supply of services in the fields of telecommunications,
       data services, and media distribution.

(d)    During the last five years, Telenor AS has not been convicted in a
       criminal proceeding.

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 9 of 18 Pages


(e)    During the last five years, Telenor AS was not a party to a civil
       proceeding of a judicial or administrative body as a result of which
       Telenor AS was or is subject to a judgment, decree or final order
       enjoining future violations of, or prohibiting or mandating activities
       subject to, federal or state securities laws or finding any violation
       with respect to such laws.

EXECUTIVE OFFICERS AND DIRECTORS OF TELENOR AS

(a), (b), (c) and (f)  The following information sets forth the name,
citizenship, business address and present principal occupation of each of the
directors and executive officers of Telenor AS.  Each of the directors and
executive officers of Telenor AS is a citizen of Norway.  Except as otherwise
indicated, the business address of each of such persons is Universitetsgt 2, 
P.O. Box 6701, St. Olavs Plass, 0130 Oslo, Norway.

Name and Business Address       Present Principal Occupation
- -------------------------       ----------------------------

Directors of Telenor AS
- -----------------------

Arnfinn Hofstad                      Director
NKL
Kirkegaten 4
0153 Oslo, Norway

Christian Brinch                     Director
Helikopter Service AS
Langkaia 1
0150 Oslo, Norway

Terje Moe Gustavsen                  Manager
LO Stat.
Mollergt.10
0179 Oslo, Norway

Oddbjorn Nordset                     Deputy County Governor
Fylkesmannen i Nord-Trondelag
Strandveien 38, Statens hus
7700 Steinkjer, Norway

Ashild Bendiktsen                    Chief Financial Officer
Entreprenor Bendiktsen
 & Aasen A/S
P.O. Box 233
9350 Sjoevegan, Norway

Inger Karin Nerheim                  Managing Director
Olympia Utvikling-Troll Park AS
2600 Lillehammer, Norway

Synnove Lohne-Knudsen                Union Leader
Kommunikasjons-og
 Teletilsattes Landsforbund
Kongensgate 15
0153 Oslo, Norway

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 10 of 18 Pages


Svein Eivind Solheim                 Manager of Operations
Telenor Istallasjon AS
Forde, Norway

Anne Sorlie                          Consultant
Tele-og Dataforbundet
P. O. Box 6701, St. Olavs pl.
0130 Oslo, Norway

Executive Officers of Telenor AS
- --------------------------------

Tormod Hermansen                President and Chief
                                Executive Officer

Ole Petter Hakonsen             Senior Executive
                                Vice President

Terje Thon                      Senior Executive
                                Vice President

Torstein Moland                 Executive Vice President
                                and Chief Financial Officer

Magnus Dokset                   Executive Vice President

Marit Doving                    Executive Vice President

Peter Pay                       Executive Vice President

(d)    During the last five years, none of the above executive officers and
       directors of Telenor AS has been convicted in a criminal proceeding.

(e)    During the last five years, none of the above executive officers and
       directors of Telenor AS has been a party to a civil proceeding of a
       judicial or administrative body as a result of which such executive
       officer or director was or is subject to a judgment, decree or final
       order enjoining future violations of, or prohibiting or mandating 
       activities subject to, federal or state securities laws or finding 
       any violation with respect to such laws.

TELENOR VENTURE AS

(a)    Telenor Venture AS, a corporation formed under the laws of Norway
       ("TELENOR")

(b)    Post Boks 6701
       St. Olavs Plass
       0130 Oslo, Norway

(c)    Investment company with venture capital investments in public and private
       companies.

(d)    During the last five years, Telenor has not been convicted in a criminal
       proceeding.

(e)    During the last five years, Telenor was not a party to a civil proceeding
       of a judicial or administrative body as a result of which Telenor was or
       is subject to a judgment, decree or final order enjoining future
       violations of, or 

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 11 of 18 Pages



       prohibiting or mandating activities subject to, federal or state 
       securities laws or finding any violation with respect to such laws.

EXECUTIVE OFFICERS AND DIRECTORS OF TELENOR

(a), (b), (c) and (f)  The following information sets forth the name,
citizenship, business address and present principal occupation of each of the
directors and executive officers of Telenor.  Each of the directors and
executive officers of Telenor is a citizen of Norway.  Except as otherwise
indicated, the business address of each of such persons is Keysersgt 13, P.O.
Box 6701, St. Olavs Plass, 0130 Oslo, Norway.

Name and Business Address       Present Principal Occupation
- -------------------------       ----------------------------

Directors and Executive Officers of Telenor Venture AS
- ------------------------------------------------------

Rune Rinnan                     President and Chief Executive Officer

Thor O. Olsen                   Senior Vice President

Tortsein Moland                 Executive Vice President and
Universitetsgaten 2             Chief Financial Officer
0165 Oslo, Norway               of Telenor AS

Oddvar Hesjedal                 Managing Director
Universitetsgaten 2             (R&D) of Telenor Fou AS
0165 Oslo, Norway

Peter Pay                       Chairman of the Board; Executive Vice President
Keysersgt 15                    of Telenor AS
0165 Oslo, Norway

Peter Hermanrud                 Investment Director
Folke Bernadottesv 40           of Vital Forsikring AS
5020 Bergen, Norway

Ronny Johan Langeland           Director of Storebrand
Postboks 1380, Vika             Investment Management
Stranden 3B, Aker Brygge
0114 Oslo, Norway

(d)    During the last five years, none of the above executive officers and
       directors of Telenor has been convicted in a criminal proceeding.

(e)    During the last five years, none of the above executive officers and
       directors of Telenor has been a party to a civil proceeding of a judicial
       or administrative body as a result of which such executive officer or
       director was or is subject to a judgment, decree or final order enjoining
       future violations of, or prohibiting or mandating activities subject to,
       federal or state securities laws or finding any violation with respect to
       such laws.

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 12 of 18 Pages


FORETAGSBYGGARNA B.V.

(a)    ForetagsByggarna B.V., corporation formed under the laws of The
       Netherlands ("FB")

(b)    A.J. Ernststraat 595 H
       1082 LD Amsterdam
       The Netherlands

(c)    Investment company with venture capital investments in public and private
       companies.

(d)    During the last five years, FB has not been convicted in a criminal
       proceeding.

(e)    During the last five years, FB was not a party to a civil proceeding of a
       judicial or administrative body as a result of which FB was or is subject
       to a judgment, decree or final order enjoining future violations of, or
       prohibiting or mandating activities subject to, federal or state
       securities laws or finding any violation with respect to such laws.

EXECUTIVE OFFICERS AND DIRECTORS OF FB

(a), (b), (c) and (f)  The sole director and executive officer of FB is B.V.
European Trust Services Amsterdam (E.T.S.A.) ("EUROPEAN TRUST"), a corporation
formed under the laws of The Netherlands and engaged in providing management and
administrative services to corporations and other business organizations.  The
business address of such person is A.J. Ernststraat 595H, 7th Floor, 1082 LD
Amsterdam, The Netherlands.  The executive officers and proxy holders of
European Trust are as follows:  Mark van Santen (Managing Director), Antonie
Marten Schuller (Assistant Managing Director), Evert Jacobus Jozef Meilink
(Proxy Holder) and Jan Scheelings (Proxy Holder).  All such executive officers
and proxy holders are citizens of The Netherlands and the business address of
each such person is A.J. Ernststraat 595H, 7th Floor, 1082 LD Amsterdam, The
Netherlands.

(d)    During the lasts five years, none of European Trust or any of its
       executive officers or proxy holders has been convicted in a criminal
       proceeding.

(e)    During the last five years, none of European Trust or any its executive
       officers or proxy holders has been a party to a civil proceeding of a
       judicial or administrative body as a result of which such person was or
       is subject to a judgment, decree or final order enjoining future
       violations of, or prohibiting or mandating activities subject to, federal
       or state securities laws or finding any violation with respect to such
       laws.

LARS LINDGREN (DIRECTOR OF CETRONIC AND CONTROLLING STOCKHOLDER OF FB)

(a)    Lars Lindgren

(b)    Norrmalmstorg 14
       111 46 Stockholm, Sweden

(c)    Engages in venture capital investments and activities, serves as a
       consultant to FB and is a partner in ForetagsByggarna AB, Norrmalmstorg
       14, 111 46 Stockholm, Sweden.

(d)    During the last five years, Mr. Lindgren has not been convicted in a
       criminal proceeding.

(e)    During the last five years, Mr. Lindgren was not a party to a civil
       proceeding of a judicial or administrative body as a result of which Mr.
       Lindgren was or is subject to a judgment, decree or final order enjoining
       future 


<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 13 of 18 Pages


       violations of, or prohibiting or mandating activities subject to, 
       federal or state securities laws or finding any violation with 
       respect to such laws.

(f)    Swedish citizen.


ITEM 3.    SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

       On January 29, 1997, Socket received a Five Hundred Thousand Dollar
       ($500,000) loan from Cetronic pursuant to a Subordinated Secured
       Convertible Promissory Note issued by Socket to Cetronic.  On June 12,
       1997, Cetronic loaned Socket an additional Five Hundred Thousand Dollars
       ($500,000) pursuant to a Subordinated Convertible Promissory Note.  On
       November 24, 1997, Cetronic loaned Socket an additional One Hundred
       Thousand Dollars ($100,000) pursuant to an additional Subordinated
       Convertible Promissory Note.  On February 14, 1997, Socket received an
       aggregate of Five Hundred Thousand Dollars ($500,000) in loans from
       several Cetronic shareholders including Telenor ($300,000) and FB
       ($140,000) pursuant to Subordinated Convertible Promissory Notes.  In
       addition, during May and June 1997, FB purchased in the open market an
       aggregate of Three Hundred Fifty-Five Thousand (355,000) shares of
       Socket's Common Stock for an aggregate purchase price of Two Hundred
       Forty-Eight Thousand Seven Hundred Eighty-Eight Dollars and Twenty-Five
       Cents ($248,788.25) and sold Eighty-Five Thousand (85,000) shares for an
       aggregate sale price of Sixty-One Thousand Ninety-Three Dollars and
       Seventy-Five Cents ($61,093.75).  In addition, on September 16, 1997, FB
       acquired an option to purchase up to $500,000 in principal amount of
       subordinated convertible promissory notes of Socket in consideration for
       FB's commitment to make a purchase of $140,000 in principal amount of
       subordinated convertible promissory notes in the event Socket achieves
       certain business milestones on or before October 31, 1997.  Although
       Socket failed to achieve the specified milestones, FB exercised its
       option under its Agreement and Option to Invest on November 7, 1997 and
       provided Socket Seventy-Five Thousand ($75,000) pursuant to an additional
       Subordinated Convertible Promissory Note.  (See Item 4 incorporated by
       reference herein for a description of the terms of the above convertible
       promissory notes.)  

       The source of funds used by Cetronic to fund the Subordinated Secured
       Convertible Promissory Note and the $100,000 Subordinated Convertible
       Promissory Note, and each of the other loans by Telenor and FB and open
       market purchases by FB was the general working capital of the applicable
       reporting person.  The funds used to fund the purchase of the $500,000
       Subordinated Convertible Promissory Note by Cetronic were raised by
       Cetronic pursuant to the sale of its convertible subordinated debentures
       bearing interest at eight percent (8%) per annum.  Such debentures, as
       amended, are convertible on or about January 15, 1998 into an aggregate
       of One Hundred Twenty Thousand (120,000) Class A shares of Cetronic.  The
       convertible subordinated debentures were purchased by the following
       persons: Telenor Venture AS, ForetagsByggarna B.V., Revert AB, Nils-Erik
       Sjoblom, Karl-Erik Eklund, Martin Gemvik, Mariegarden Investment AB,
       Jelka Forvaltning, Mats Carlgrens Stiftelse AB, TRC/Statens institut for
       blinda, Goran Garberg, Tellus Maskin AB, Birgitta Holmstrom, Familjen
       Ljungberg, Gert Blomen, Gerania AB, Scandinavian Merchant Group, Fredrik
       Grunewald, Cambista AB, Bona Utilia AB, Sture Lunden.

       The other reporting persons acquired their beneficial interest in the
       Common Stock of Socket held by Telenor and FB solely by reason of their
       relationship to such entity.  Telenor AS is a seventy percent (70%)
       shareholder of Telenor which, in turn, holds a twenty-one and nine tenths
       percent (21.9%) stockholding interest and a thirty-one percent (31%)
       voting interest in Cetronic.  Telenor AS and Telenor disclaim any
       beneficial ownership of the shares of Socket held by Cetronic.  Lars
       Lindgren is a controlling stockholder of FB.

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 14 of 18 Pages


ITEM 4.    PURPOSE OF TRANSACTION.

       On January 29, 1997, Socket received a Five Hundred Thousand Dollar
       ($500,000) loan from Cetronic pursuant to a Subordinated Secured
       Convertible Promissory Note (the "CETRONIC NOTE") issued by Socket to
       Cetronic.  The interest rate on the Cetronic Note is eight percent (8%)
       and the term was initially six (6) months.  The principal and accrued
       interest thereon may be converted into the Company's Common Stock at One
       Dollar ($1.00) per share at any time during the term at the option of
       Cetronic.  The Company may also prepay the Cetronic Note and whole or in
       part at any time upon prior written notice to Cetronic.  The Cetronic
       Note is secured by certain marketing and manufacturing rights with
       respect to four (4) products being developed jointly by Socket and
       Cetronic.  On February 14, 1997, Socket additionally received an
       aggregate of Five Hundred Thousand Dollars ($500,000) in loans (the
       "STOCKHOLDER NOTES") from several Cetronic shareholders including Telenor
       ($300,000) and FB ($140,000).  The terms of each note were identical to
       the terms of the Cetronic Note except that the Stockholder Notes were
       unsecured.  All such notes received by Cetronic, Telenor and FB were
       acquired for investment purposes.

       During May and June 1997, FB purchased in the open market an aggregate of
       Three Hundred Fifty-Five Thousand (355,000) shares of the Company's
       Common Stock for an aggregate purchase price of Two Hundred Forty-Eight
       Thousand Seven Hundred Eighty-Eight Dollars and Twenty-Five Cents
       ($248,788.25) and sold Eighty-Five Thousand (85,000) shares for an
       aggregate sale price of Sixty-One Thousand Ninety-Three Dollars and
       Seventy-Five Cents ($61,093.75).  All such transactions were entered into
       by FB for investment purposes.

       On June 12, 1997, Cetronic and Socket entered into a Combination
       Agreement (the "COMBINATION AGREEMENT") pursuant to which Socket would
       acquire, pursuant to an exchange offer and, if deemed necessary by
       Socket, through compulsory acquisition proceedings in accordance with the
       Swedish Companies Act, all the issued and outstanding stock of Cetronic. 
       Under the terms of the Combination Agreement, Socket would be issued up
       to $11.7 Million in Socket Common Stock in exchange for all of the common
       shares of Cetronic. 

       Concurrently with execution of the Combination Agreement, Cetronic
       provided Socket an additional Five Hundred Thousand Dollar ($500,000)
       loan pursuant to a Subordinated Convertible Promissory Note (the "BRIDGE
       NOTE") to provide additional working capital to Socket pending completion
       of the merger.  The initial terms of this note were identical to the
       terms of the original Cetronic Note except that the Bridge Note was
       unsecured.  

       In addition, Cetronic agreed to extend the maturity dates of the Cetronic
       Note and use its best efforts to extend the maturity dates of the
       Stockholder Notes so that they each became due on the same date as the
       Bridge Note.  On July 29, 1997, Cetronic entered into Amendment No. 1 to
       the Cetronic Note extending the maturity dated of the Cetronic Note to
       correspond to the maturity date of the Bridge Note.  On September 15,
       1997, Cetronic entered into Amendment No. 1 to the Bridge Note and
       Amendment No. 2 to the Cetronic Note subordinating the Bridge Note and
       Cetronic Note to additional indebtedness of Socket.  On or about
       October 30, 1997, Cetronic agreed to extend the maturity dates of the
       Cetronic Note and the Bridge Note to December 12, 1998 and to reduce the
       initial conversion price of the Bridge Note from $1.00 to $0.50.  Each of
       the holders (except Telenor) of the Stockholder Notes agreed to amend and
       restate its Stockholder Note as of August 14, 1997 to extend its maturity
       date to August 14, 1998, to subordinate it to additional indebtedness of
       Socket and to reduce its initial conversion price from $1.00 to $0.50. 
       Also, on or about September 16, 1997 in connection with the foregoing
       amendment and restatement of certain of the Stockholder Notes, each
       holder (except Telenor) of the Stockholder Notes executed an Agreement
       and Option to Invest with Socket which provided each holder with an
       option to invest up to an additional amount in Socket pursuant to the
       purchase of additional subordinated convertible promissory notes on
       substantially the same terms and conditions as the amended and restated
       Stockholder Notes.  On October 3, 1997, Telenor agreed to extend the
       maturity date of its Stockholder Note to August 14, 1998 in 

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 15 of 18 Pages


       consideration of a reduction in the initial conversion price from 
       $1.00 to $0.50 and certain amendments to the registration rights 
       granted thereunder.

       All holders of Stockholder Notes (other than Telenor) also committed to
       invest in the aggregate an additional minimum amount of $200,000 if
       Socket achieved certain business milestones on or before October 31,
       1997.  Socket failed to achieve the specified milestones.  However, FB
       and certain other Cetronic stockholders exercised their options under
       their respective Agreement and Option to Invest and provided an aggregate
       of $150,000 to Socket pursuant to additional Subordinated Convertible
       Promissory Notes dated November 7, 1997.  On November 24, 1997, Cetronic
       purchased an additional Subordinated Convertible Promissory Note from
       Socket in the principal amount of $100,000, convertible at an initial
       conversion price of $0.50 per share.  The initial terms of the
       Subordinated Convertible Promissory Notes issued to FB on November 7,
       1997 and to Cetronic on November 24, 1997 were substantially identical.

       The transactions contemplated pursuant to the Combination Agreement 
       have not been consummated.  The Combination Agreement expired
       in accordance with its terms on or about December 12, 1997.  On 
       December 10, 1997, Cetronic and Socket entered into a Letter of
       Intent to cooperate in a new joint venture designed to combine the 
       wireless businesses of the two companies into a single entity owned by 
       Cetronic and Socket.  The specific terms of the joint venture are 
       subject to further negotiation by the parties and the approval of the 
       Boards of Directors of each company.

       Except as set forth above, no person named in Item 2 to this Schedule 13D
       currently has any plans or proposals which relate to or would result in:
       (a) the acquisition by any such person of any additional securities of
       Socket, or the disposition of securities of Socket; (b) an extraordinary
       corporate transaction, such as a merger or liquidation, involving Socket
       or any of its subsidiaries; (c) a sale or transfer of a material amount
       of assets of Socket or any of its subsidiaries; (d) any change in the
       present Board of Directors or management of Socket, including any plans
       or proposals to change the number or term or directors or to fill any
       existing vacancies on the Board; (e) any material change in the present
       capitalization or dividend policy of Socket; (f) any other material
       change in Socket's business or corporate structure; (g) changes in
       Socket's charter, bylaws or instruments corresponding thereto or other
       actions which may impede the acquisition of control of Socket by any
       person; (h) causing a class of securities of Socket to be delisted from a
       national securities exchange or to cease to be authorized to be quoted in
       an inter-dealer quotation system of a registered national securities
       association; (i) a class of equity securities of Socket becoming eligible
       for termination of registration pursuant to Section 12(g)(4) of the
       Securities Exchange Act of 1934; or (j) any action similar to any of the
       foregoing.


ITEM 5.    INTEREST IN SECURITIES OF THE ISSUER.

(a)    The following table sets forth the aggregate number and percentage of the
       class of securities identified in Item 1 beneficially owned (identifying
       those shares which there is a right to acquire) by each person named in
       Item 2 of this Schedule 13D.  The following information is based upon
       information regarding the number of securities outstanding as supplied by
       Socket.

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 16 of 18 Pages


<TABLE>
                           Number of Shares                        Percentage of Class
Person                    Beneficially Owned                        Beneficially Owned
- ------                    ------------------                      ---------------------
                                         Right to                                Right to 
                         Aggregate        Acquire                Aggregate       Acquire
                         ---------       --------                ---------       --------
<S>                      <C>             <C>                     <C>             <C>
Cetronic                 1,700,000       1,700,000                 20.7%           20.7%

Telenor                    600,000         600,000                  8.4%            8.4%

Telenor AS                 600,000         600,000                  8.4%            8.4%

FB                         700,000         430,000                 10.1%            6.2%

Lars Lindgren              700,000         430,000                 10.1%            6.2%
</TABLE>

(b)  The information contained in Lines (7), (8), (9) and (10) of the cover
     pages hereof (Pages 2 through 6) is incorporated herein by this reference.

(c)  Inapplicable

(d)  Inapplicable

(e)  Inapplicable


ITEM 6.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR 
          RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER.

     Except as described in Item 4, none of the reporting persons has any
     contracts, arrangements, understandings or relationships (legal or
     otherwise) with any person with respect to any securities of Socket,
     including, but not limited to, transfer or voting of any of the securities,
     finder's fees, joint ventures, loan or option arrangements, puts or calls,
     guaranties of loans, guaranties against loss or guaranties of profits,
     division of profits or loss, or the giving or withholding of proxies.


ITEM 7.   MATERIAL TO BE FILED AS EXHIBITS.

          1.   Attached hereto as Exhibit "A" is a copy of the reporting
               persons' agreement pursuant to Rule 13d-1(f)(1)(iii).

          2.   Attached hereto as Exhibit "B" is a copy of the Combination
               Agreement dated June 12, 1997 by and between Cetronic and Socket.

          3.   Attached hereto as Exhibit "C" is a copy of the Subordinated
               Secured Convertible Promissory Note issued by Socket to Cetronic
               on January 29, 1997 and the forms of Amendments Nos. 1 and 2
               thereto.  

          4.   Attached hereto as Exhibit "D" is a copy of the form of
               Subordinated Convertible Promissory Note issued by Socket to
               Cetronic on June 12, 1997 and the form of Amendment No. 1
               thereto.  

<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 17 of 18 Pages


          5.   Attached hereto as Exhibit "E" is a copy of the form of
               Subordinated Convertible Promissory Note issued by Socket to
               Telenor and FB on February 14, 1997.

          6.   Attached hereto as Exhibit "F" is a copy of the form of the
               Amended and Restated Subordinated Convertible Promissory Note
               issued by Socket to FB and others on September 16, 1997 amending
               and restating certain Notes issued on February 14, 1997.

          7.   Attached hereto as Exhibit "G" is a copy of the form of the
               Agreement and Option to Invest issued by Socket to FB on
               September 16, 1997.

          8.   Attached hereto as Exhibit "H" is a copy of the form of Amended
               Subordinated Convertible Promissory Note issued by Socket to
               Telenor on or about October 3, 1997 amending the Note issued on
               February 14, 1997.

          9.   Attached hereto as Exhibit "I" is a copy of the form of
               Subordinated Convertible Promissory Notes issued by Socket to FB
               on November 7, 1997 and to Cetronic on November 24, 1997.

          10.  Attached hereto as Exhibit "J" is a copy of the Letter of 
               Intent To Cooperate in a Wireless Joint Venture dated December 
               10, 1997 by and between Cetronic and Socket.


<PAGE>

                                SCHEDULE 13D

CUSIP No. 833 672 108                                       Page 18 of 18 Pages


                                   SIGNATURES


After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct. 
This statement may be executed in counterparts, each of which shall be deemed an
original, but all of which together shall constitute one and the same
instrument.


Dated:  February 11, 1998          Cetronic Aktiebolag (Publ), a Swedish 
                                   corporation


                                   By: /s/ Richard A. Horning
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998          Telenor AS, a Norwegian corporation


                                   By: /s/ Richard A. Horning
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998          Telenor Venture AS, a Norwegian corporation


                                   By: /s/ Richard A. Horning
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998          ForetagsByggarna B.V., a Netherlands 
                                   corporation


                                   By: /s/ Richard A. Horning
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated: February 11, 1998           Lars Lindgren


                                    /s/ Richard A. Horning
                                    ------------------------------------------
                                    Richard A. Horning, Attorney-In-Fact


<PAGE>


                                    EXHIBIT A
                                    ---------

                                    AGREEMENT
                                    ---------

            This will memorialize the agreement by and among all of the 
undersigned that the Schedule 13D identifying each of the undersigned as 
"reporting persons" and mailed to Socket Communications, Inc. ("SOCKET") and 
filed with the Securities and Exchange Commission on or about February 11, 
1998 with respect to the acquisition of beneficial ownership of shares of 
Socket's Common Stock is being filed on behalf of each of the persons signing 
below. This Agreement may be executed in counterparts, each of which shall be 
deemed an original, but all of which together shall constitute one and the 
same instrument.

Dated:  February 11, 1998          Cetronic Aktiebolag (Publ), a Swedish   
                                   corporation

                                   By: /s/ Richard A. Horning              
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998          Telenor AS, a Norwegian corporation

                                   By: /s/ Richard A. Horning              
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998          Telenor Venture AS, a Norwegian corporation

                                   By: /s/ Richard A. Horning              
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998          ForetagsByggarna B.V., a Netherlands 
                                   corporation

                                   By: /s/ Richard A. Horning              
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact


Dated:  February 11, 1998           Lars Lindgren

                                   By: /s/ Richard A. Horning              
                                       ---------------------------------------
                                       Richard A. Horning, Attorney-In-Fact



<PAGE>

                                                                      EXHIBIT B



                              COMBINATION AGREEMENT

                                 BY AND BETWEEN

                           SOCKET COMMUNICATIONS, INC.

                                       AND

                           CETRONIC AKTIEBOLAG [PUBL]

                            DATED AS OF JUNE 12, 1997

<PAGE>
                                TABLE OF CONTENTS

                                                                            PAGE

ARTICLE I - THE TRANSACTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
     SECTION 1.01   Closing  . . . . . . . . . . . . . . . . . . . . . . . . . 1
     SECTION 1.02   The Exchange Offer . . . . . . . . . . . . . . . . . . . . 1
     SECTION 1.03   Depositary . . . . . . . . . . . . . . . . . . . . . . . . 3
     SECTION 1.04   Compulsory Acquisition . . . . . . . . . . . . . . . . . . 3

ARTICLE II - REPRESENTATIONS AND WARRANTIES OF SOCKET  . . . . . . . . . . . . 3
     SECTION 2.01   Organization and Qualification; Subsidiaries . . . . . . . 4
     SECTION 2.02   Capitalization . . . . . . . . . . . . . . . . . . . . . . 4
     SECTION 2.03   Authority Relative to This Agreement . . . . . . . . . . . 5
     SECTION 2.04   No Conflict; Required Filings and Consents . . . . . . . . 5
     SECTION 2.05   Permits; Compliance  . . . . . . . . . . . . . . . . . . . 5
     SECTION 2.06   SEC Filings; Financial Statements  . . . . . . . . . . . . 6
     SECTION 2.07   Absence of Certain Changes or Events . . . . . . . . . . . 6
     SECTION 2.08   Employee Benefit Plans; Labor Matters  . . . . . . . . . . 7
     SECTION 2.09   Contracts; Debt Instruments  . . . . . . . . . . . . . . . 8
     SECTION 2.10   Litigation . . . . . . . . . . . . . . . . . . . . . . . . 8
     SECTION 2.11   Environmental Matters  . . . . . . . . . . . . . . . . . . 8
     SECTION 2.12   Trademarks, Patents and Copyrights . . . . . . . . . . . . 9
     SECTION 2.13   Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . 9
     SECTION 2.14   Brokers  . . . . . . . . . . . . . . . . . . . . . . . . . 9
     SECTION 2.15   Interested Party Transactions  . . . . . . . . . . . . .  10
     SECTION 2.16   Ownership of Property  . . . . . . . . . . . . . . . . .  10
     SECTION 2.17   Material Relationships . . . . . . . . . . . . . . . . .  10
     SECTION 2.18   Disclosure . . . . . . . . . . . . . . . . . . . . . . .  10

ARTICLE III - REPRESENTATIONS AND WARRANTIES OF CETRONIC
     SECTION 3.01   Organization and Qualification; Subsidiaries . . . . . .  10
     SECTION 3.02   Capitalization . . . . . . . . . . . . . . . . . . . . .  11
     SECTION 3.03   Authority Relative to This Agreement . . . . . . . . . .  11
     SECTION 3.04   No Conflict; Required Filings and Consents . . . . . . .  12
     SECTION 3.05   Permits; Compliance  . . . . . . . . . . . . . . . . . .  12
     SECTION 3.06   Financial Statements . . . . . . . . . . . . . . . . . .  13
     SECTION 3.07   Absence of Certain Changes or Events . . . . . . . . . .  13
     SECTION 3.08   Employee Benefit Plans; Labor Matters  . . . . . . . . .  13
     SECTION 3.09   Contracts; Debt Instruments  . . . . . . . . . . . . . .  14
     SECTION 3.10   Litigation . . . . . . . . . . . . . . . . . . . . . . .  15
     SECTION 3.11   Environmental Matters  . . . . . . . . . . . . . . . . .  15
     SECTION 3.12   Trademarks, Patents and Copyrights . . . . . . . . . . .  15
     SECTION 3.13   Taxes  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     SECTION 3.14   Interested Party Transactions  . . . . . . . . . . . . .  16
     SECTION 3.15   Ownership of Property  . . . . . . . . . . . . . . . . .  16
     SECTION 3.16   Material Relationships . . . . . . . . . . . . . . . . .  16
     SECTION 3.17   Disclosure . . . . . . . . . . . . . . . . . . . . . . .  16

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page ii


ARTICLE IV - COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
     SECTION 4.01   Conduct of Business by Socket Pending the Closing  . . .  17
     SECTION 4.02   Conduct of Business by Cetronic Pending the Closing  . .  18
     SECTION 4.03   Cooperation  . . . . . . . . . . . . . . . . . . . . . .  20
     SECTION 4.04   Notices of Certain Events  . . . . . . . . . . . . . . .  20
     SECTION 4.05   Contractual Consents . . . . . . . . . . . . . . . . . .  21

ARTICLE V - ADDITIONAL AGREEMENTS  . . . . . . . . . . . . . . . . . . . . .  21
     SECTION 5.01   Registration Statement; Disclosure Documents . . . . . .  21
     SECTION 5.02   Stockholders' Meetings . . . . . . . . . . . . . . . . .  23
     SECTION 5.03   Access to Information; Confidentiality . . . . . . . . .  23
     SECTION 5.04   No Solicitation of Transactions  . . . . . . . . . . . . .24
     SECTION 5.05   Employee Benefits Matters  . . . . . . . . . . . . . . .  25
     SECTION 5.06   Letters of Accountants . . . . . . . . . . . . . . . . .  25
     SECTION 5.07   Further Action; Consents; Filings  . . . . . . . . . . .  25
     SECTION 5.08   Socket Organization  . . . . . . . . . . . . . . . . . .  26
     SECTION 5.09   Public Announcements . . . . . . . . . . . . . . . . . .  26
     SECTION 5.10   Stock Exchange Listings  . . . . . . . . . . . . . . . .  26
     SECTION 5.11   Convertible Bridge Loans . . . . . . . . . . . . . . . .  27
     SECTION 5.12   Cetronic Intellectual Property Agreements  . . . . . . .  27
     SECTION 5.13   Termination of Cetronic Stockholders' Agreement  . . . .  27
     SECTION 5.14   Cetronic Related-Party Agreements  . . . . . . . . . . .  27
     SECTION 5.15   Conversion of Cetronic Convertible Notes . . . . . . . .  27
     SECTION 5.16   Registration Rights Agreement  . . . . . . . . . . . . .  27

ARTICLE IV - CONDITIONS TO THE TRANSACTIONS  . . . . . . . . . . . . . . . .  28
     SECTION 6.01   Conditions to the Obligations of Each Party to 
                    Consummate the Transactions  . . . . . . . . . . . . . .  28
     SECTION 6.02   Conditions to the Obligations of Socket  . . . . . . . .  28
     SECTION 6.03   Conditions to the Obligations of Cetronic  . . . . . . .  29

ARTICLE VII - TERMINATION, AMENDMENT AND WAIVER  . . . . . . . . . . . . . .  30
     SECTION 7.01   Termination  . . . . . . . . . . . . . . . . . . . . . .  30
     SECTION 7.02   Effect of Termination  . . . . . . . . . . . . . . . . .  32
     SECTION 7.03   Amendment  . . . . . . . . . . . . . . . . . . . . . . .  32
     SECTION 7.04   Waiver . . . . . . . . . . . . . . . . . . . . . . . . .  32
     SECTION 7.05   Fees and Expenses  . . . . . . . . . . . . . . . . . . .  32

ARTICLE VIII - GENERAL PROVISIONS  . . . . . . . . . . . . . . . . . . . . .  34
     SECTION 8.01   No Survival of Representations . . . . . . . . . . . . .  34
     SECTION 8.02   Notices  . . . . . . . . . . . . . . . . . . . . . . . .  34
     SECTION 8.03   Certain Definitions  . . . . . . . . . . . . . . . . . .  35
     SECTION 8.04   Severability . . . . . . . . . . . . . . . . . . . . . .  36
     SECTION 8.05   Assignment; Binding Effect; Benefit  . . . . . . . . . .  36
     SECTION 8.06   Incorporation of Exhibits  . . . . . . . . . . . . . . .  37
     SECTION 8.07   Governing Law  . . . . . . . . . . . . . . . . . . . . .  37
     SECTION 8.08   Arbitration  . . . . . . . . . . . . . . . . . . . . . .  37

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page iii


     SECTION 8.09   Headings . . . . . . . . . . . . . . . . . . . . . . . .  38
     SECTION 8.10   Counterparts . . . . . . . . . . . . . . . . . . . . . .  38
     SECTION 8.11   Entire Agreement . . . . . . . . . . . . . . . . . . . .  39


<PAGE>

                              INDEX OF SCHEDULES


Socket Disclosure Schedule
Cetronic Disclosure Schedule
Schedule 5.11 -- Holders of Socket Convertible Promissory Notes
Schedule 5.12 -- Intellectual Property Agreements
Schedule 5.15 -- Holders of Cetronic Convertible Promissory Notes
Schedule 5.16 -- Registration Rights Holders
Schedule 6.3(f) -- Socket Consents



<PAGE>

                                INDEX OF EXHIBITS


Exhibit A Form of Cetronic Convertible Promissory Note

Exhibit B Form of Socket Convertible Promissory Note


<PAGE>

                              COMBINATION AGREEMENT


       COMBINATION AGREEMENT, dated as of June 12, 1997 (this "Agreement"), 
by and between CETRONIC AKTIEBOLAG [PUBL], a corporation organized under the 
laws of the Kingdom of Sweden ("Cetronic"), and SOCKET COMMUNICATIONS, INC., 
a Delaware corporation ("Socket").

       WHEREAS, the Boards of Directors of Cetronic and Socket have 
determined that it is in the best interests of their respective companies and 
stockholders to combine their respective businesses in a transaction to be 
effected as set forth in this Agreement;

       WHEREAS, upon the terms and subject to the conditions of this 
Agreement, Socket will acquire, pursuant to an exchange offer (the "Exchange 
Offer") and, if deemed necessary by Socket, through compulsory acquisition 
proceedings in accordance with the Swedish Companies Act (collectively, the 
"Transactions"), all the issued and outstanding Class A Common Shares, 
nominal value SEK 1.00 per share, of Cetronic (the "Cetronic Class A Common 
Shares"), and Class B Common Shares, nominal value SEK 1.00 per share, of 
Cetronic (the "Cetronic Class B Common Shares," and together with the 
Cetronic Class A Common Shares, the "Cetronic Shares"), as more fully 
described below;

       WHEREAS, as a result of the Exchange Offer, Cetronic may become, 
directly or indirectly, a wholly owned subsidiary of Socket, and the holders 
of Cetronic Shares will receive newly issued shares of Common Stock, par 
value $0.001 per share, of Socket (the "Socket Common Stock");

       WHEREAS, the Board of Directors of Cetronic has approved the Exchange 
Offer and recommended that all the stockholders of Cetronic tender their 
Cetronic Shares into the Exchange Offer;

       WHEREAS, the Board of Directors of Socket has approved this Agreement 
and recommended that the stockholders of Socket vote to adopt this Agreement 
upon the terms and subject to the conditions contained herein;

       NOW THEREFORE, in consideration of the foregoing and the mutual 
covenants and agreements herein contained and intending to be legally bound 
hereby, the parties hereto hereby agree as follows:

       SECTION 1.01   CLOSING.  Provided that this Agreement shall not have 
been terminated in accordance with Section 7.01, as promptly as practicable 
after the satisfaction or, if permissible and effected as provided in Section 
7.04, waiver of the Exchange Offer Conditions (as hereinafter defined) (or 
such other date as may be agreed to in writing by Cetronic and Socket), a 
closing (the "Closing") will be held at the offices of Wilson Sonsini 
Goodrich & Rosati, Professional Corporation, Palo Alto, California, or such 
other location as the parties may mutually agree (the date and time of such 
Closing, or such later date and time as shall be agreed by the parties, being 
the "Closing Date" and the "Closing Time," respectively).

       SECTION 1.02   THE EXCHANGE OFFER.

            (a)   Provided that this Agreement shall not have been terminated 
in accordance with Section 7.01, Socket shall commence the Exchange Offer on 
or as soon as practicable after the Registration Statement Effective Date 
(the "Exchange Offer Commencement Date") as contemplated by the Disclosure 
Documents (as hereinafter defined) and otherwise in accordance with 
applicable Laws. Pursuant to the Exchange Offer, Socket shall offer to 
exchange for each Cetronic Share, subject to the conditions set forth below, 
that number of shares of Socket Common Stock equal to the quotient obtained 
by dividing (i) the quotient obtained by dividing (A) the quotient obtained 
by dividing SEK 90,720,000 by the average exchange rate for the U.S. dollar 
against the Swedish krona based on the Noon Buying Rate (as defined in 
Section 8.03 hereof) during the Measurement Period 


<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 2


(as defined below) (the "Aggregate Purchase Price") by (B) the Applicable 
Socket Share Valuation Price (as defined below); by (ii) the total number of 
Cetronic Shares outstanding; provided, that the Aggregate Purchase Price 
shall be reduced to the extent (i) that on the business day immediately 
preceding the Exchange Offer Commencement Date there remain any unpaid shares 
of Class B Common Stock and (ii) any portion of the Cetronic convertible 
notes referred to in Section 5.15 hereof remain unconverted on the initial 
Expiration Date (as defined below).  For purposes of this Agreement, the 
"Applicable Socket Share Valuation Price" means 80% of the average closing 
sale price of the Socket Common Stock on the OTC Bulletin Board for the 
period (the "Measurement Period") which is the twenty (20) trading days 
ending on the fifth trading day immediately prior to the initial Expiration 
Date (as defined below) (the "Socket Share Valuation Price"); provided, that 
if the Socket Share Valuation Price is less than $0.75, the Applicable Socket 
Share Valuation Price shall be $0.75; provided, further, that if the Socket 
Share Valuation Price is greater than $2.25, the Applicable Socket Share 
Valuation Price shall be $2.25.  The obligation of Socket to accept for 
payment and pay for Cetronic Shares tendered pursuant to the Exchange Offer 
shall be subject only to this Agreement not having been terminated pursuant 
to Section 7.01 and the satisfaction or waiver, if permissible and effected 
as provided in Section 7.04, of (i) the condition that a number of Cetronic 
Shares representing more than 90% of the number of shares and voting power of 
the then outstanding Cetronic Shares shall have been validly tendered and not 
withdrawn prior to the expiration of the Exchange Offer (the "Minimum 
Condition"), (ii) the condition that this Agreement shall have been adopted 
by the requisite affirmative vote of the stockholders of Socket in accordance 
with the DGCL (the "Socket Stockholder Approval Condition") and (iii) the 
other conditions set forth in Article VI of this Agreement (together with the 
Minimum Condition and the Socket Stockholder Approval Condition, the 
"Exchange Offer Conditions").  The initial expiration date of the Exchange 
Offer shall be the date which is twenty (20) Business Days after the Exchange 
Offer Commencement Date (such date, as it may be extended from time to time 
as hereinafter provided, the "Expiration Date") and, provided that a number 
of Cetronic Shares representing more than 70% of the number of shares and 
voting power of the then outstanding Cetronic Shares shall have been validly 
tendered and not withdrawn prior to the initial Expiration Date and that this 
Agreement shall not have been terminated in accordance with Section 7.01, 
shall be extended by Socket from time to time thereafter until such time as 
all of the Exchange Offer Conditions have been satisfied or waived; provided, 
however that if the Minimum Condition is not satisfied on an Expiration Date 
that occurs on or after the fifth Business Day immediately preceding the 
Final Closing Date (as defined in Section 7.01(b) hereof), Socket may permit 
the Exchange Offer to expire on such Expiration Date.  Subject only to the 
conditions set forth above, Socket shall accept for exchange and shall 
exchange all Cetronic Shares validly tendered and not withdrawn pursuant to 
the terms of the Exchange Offer at the earliest practicable time following 
the Closing Time.

            (b)   Notwithstanding the provisions of Section 1.02(a) above, 
each holder of Cetronic Shares may elect to receive, with respect to one 
percent (1%) of the Cetronic Shares held by such stockholder tendered in the 
Exchange Offer, in lieu of shares of Socket Common Stock in the Exchange 
Offer, an amount in cash equal to the dollar value of the shares of Socket 
Common Stock otherwise exchangeable for such Cetronic Shares in the Exchange 
Offer based on the Applicable Socket Share Valuation Price.

            (c)   In the event of any reclassification, stock split or stock 
dividend with respect to the Socket Common Stock, any change or conversion of 
Socket Common Stock into other securities or any other dividend or 
distribution with respect thereto (or if record date with respect to any of 
the foregoing should occur) prior to the Closing, appropriate and 
proportionate adjustments, if any, shall be made to the Applicable Socket 
Share Valuation Price, and all references to the Applicable Socket Share 
Valuation Price in this Agreement shall be deemed to be to such Applicable 
Socket Share Valuation Price as so adjusted.


<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 3


            (d)   Prior to or substantially contemporaneously with the 
Exchange Offer Commencement Date, Socket shall file a Swedish language 
prospectus (or Swedish language translations or summaries of the Joint Proxy 
Statement (as defined herein) as may be necessary and appropriate in Sweden) 
with the Financial Supervisory Authority (the "FSA"), as required in Sweden.

            (e)   As promptly as practicable after the Closing Time, Socket 
shall cause there to be held a meeting of the holders of Cetronic Shares to 
elect the Board of Directors of Cetronic so that members of the Cetronic 
Board of Directors shall, subject to applicable Laws, be the same individuals 
who comprise the whole Board of Directors of Socket; provided, that, if 
applicable Laws prohibit such composition of the Board of Directors, then the 
Cetronic Board of Directors shall be comprised so that the number of Socket 
and Cetronic designees thereon shall be, as nearly as practicable, in the 
same proportion as on the Socket Board of Directors.

            (f)   No fraction of a share of Socket Common Stock will be 
issued, but in lieu thereof, each holder of Cetronic Shares who would 
otherwise be entitled to a fraction of a share of Socket Common Stock (after 
aggregating all fractional shares of Socket Common Stock to be received by 
such holder) shall be entitled to receive from Socket an amount of cash 
(rounded to the nearest whole cent) equal to the product of (i) such 
fraction, multiplied by (ii) the Applicable Socket Share Valuation Price.

       SECTION 1.03   DEPOSITARY.  Socket shall appoint a Swedish bank or 
broker reasonably satisfactory to Cetronic to act as depositary for the 
Exchange Offer (the "Depositary").

       SECTION 1.04   COMPULSORY ACQUISITION.  (a) As soon as practicable 
after the Closing Date, assuming that the Minimum Condition has been 
satisfied and not waived, Socket may at its sole discretion, unless the 
parties mutually agree that there is a more effective method of achieving the 
objectives described in this Section 1.04 (in which case such method may be 
used), contribute all of the Cetronic Shares owned by it to a newly formed 
wholly-owned subsidiary organized under the laws of the Kingdom of Sweden 
("Swedish Newco") in exchange for all of the capital stock of Swedish Newco, 
and shall cause Swedish Newco to take all actions necessary and proper under 
the Swedish Companies Act to commence a process leading to a compulsory 
acquisition under Section 14:31 of the Swedish Companies Act to acquire all 
the issued and outstanding Cetronic Shares not acquired by Socket pursuant to 
the Exchange Offer.

            (b)   In the event of consummation of the Transactions following 
the waiver of the Minimum Condition effected as provided in Section 7.04, 
Socket may, at its sole discretion, conduct, directly or indirectly, such 
other offers (including, without limitation, pursuant to open market 
purchases) as are necessary to obtain, when aggregated with the number of 
shares and vote of Cetronic Shares already owned by it, more than 90% of the 
number of shares and voting power of the then outstanding Cetronic Shares.  
Thereafter, Socket shall take the actions described in Section 1.04(a).

                                   ARTICLE II

                    REPRESENTATIONS AND WARRANTIES OF SOCKET

       Except as set forth on the Disclosure Schedule delivered by Socket to
Cetronic prior to the execution of this Agreement (the "Socket Disclosure
Schedule"), Socket hereby represents and warrants to Cetronic as follows:


<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 4


       SECTION 2.01   ORGANIZATION AND QUALIFICATION; SUBSIDIARIES.  Socket 
has been duly organized, and is validly existing and in good standing under 
the laws of the jurisdiction of its incorporation, and has the requisite 
power and authority and all necessary governmental approvals to own, lease 
and operate its properties and to carry on its business as it is now being 
conducted, except where the failure to be so organized, existing or in good 
standing or to have such power, authority and governmental approvals would 
not, individually or in the aggregate, have a Socket Material Adverse Effect 
(defined below).  Socket does not own, directly or indirectly, any capital 
stock or other equity interest of any corporation or have any direct or 
indirect equity or ownership interest in any other business, whether 
organized as a corporation, partnership, joint venture or otherwise.  Socket 
is duly qualified or licensed to do business, and is in good standing, in 
each jurisdiction where the character of the properties owned, leased or 
operated by it or the nature of its business makes such qualification or 
licensing necessary, except for such failures to be so qualified or licensed 
and in good standing that would not, individually or in the aggregate, have a 
Socket Material Adverse Effect.  For purposes of this Agreement, "Socket 
Material Adverse Effect" means any change in or effect on the business of 
Socket that is, or is reasonably likely to be, materially adverse to the 
business, assets (including intangible assets), liabilities (contingent or 
otherwise), condition (financial or otherwise) or results of operations of 
Socket.  Socket has made available to Cetronic complete and correct copies of 
the certificate of incorporation and bylaws of Socket, in each case as 
amended to date.

       SECTION 2.02   CAPITALIZATION.  The authorized capital stock of Socket 
consists of (a) 15,000,000 shares of Socket Common Stock and (b) 3,000,000 
shares of preferred stock, l,000,000 shares of which are Series A Preferred 
Stock (the "Socket Series A Preferred Stock").  As of the Business Day 
immediately preceding the date of this Agreement, (i) 5,380,937 shares of 
Socket Common Stock were issued and outstanding, all of which were validly 
issued and fully paid and nonassessable, (ii) 381,517 shares of Socket Common 
Stock were reserved for issuance upon exercise of stock options ("Socket 
Options") granted pursuant to Socket's 1995 Stock Plan (the " 1995 Plan") and 
Socket's 1993 Stock Option/Stock Issuance Plan (the " 1993 Plan" and together 
with the 1995 Plan, the "Socket Stock Option Plans"), (iv) 236,426 shares of 
Socket Common Stock were reserved for issuance upon exercise of future grants 
of stock options under the Socket Stock Option Plans, (vi) 757,590 shares of 
Socket Common Stock were reserved for issuance upon exercise of current 
warrants outstanding (the "Socket Warrants"), and (vii) 4,052 shares of 
Socket Series A Preferred Stock were issued and outstanding, all of which 
were validly issued, fully paid and nonassessable.  Except for the Socket 
Options granted pursuant to the Socket Stock Option Plans and the Socket 
Warrants or pursuant to agreements or arrangements described in Section 2.02 
of the Socket Disclosure Schedule, there are no options, warrants or other 
rights, agreements, arrangements or commitments of any character to which 
Socket is a party or by which Socket is bound relating to the issued or 
unissued capital stock of Socket or obligating Socket to issue or sell any 
shares of capital stock of, or other equity interests in, Socket.  All shares 
of Socket Common Stock subject to issuance as aforesaid, upon issuance prior 
to the Closing Time on the terms and conditions specified in the instruments 
pursuant to which they are issuable, will be duly authorized, validly issued, 
fully paid and nonassessable.  The shares of Socket Common Stock to be issued 
pursuant to the Transactions will be duly authorized, validly issued, fully 
paid and non-assessable.  Except as set forth in Section 2.02 of the Socket 
Disclosure Schedule, there are no outstanding contractual obligations of 
Socket to repurchase, redeem or otherwise acquire any shares of Socket Common 
Stock.  Except as set forth in Section 2.02 of the Socket Disclosure 
Schedule, there are no material outstanding contractual obligations of Socket 
to provide funds to, or make any investment (in the form of a loan, capital 
contribution or otherwise) in, any other person.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 5


       SECTION 2.03   AUTHORITY RELATIVE TO THIS AGREEMENT.  Socket has all 
necessary corporate power and authority to execute and deliver this Agreement 
and to perform its obligations hereunder and to consummate the transactions 
(including, without limitation, the Transactions) contemplated herein to be 
consummated by Socket.  The execution and delivery of this Agreement by 
Socket and the consummation by Socket of such transactions have been duly and 
validly authorized by all necessary corporate action and no other corporate 
proceedings on the part of Socket are necessary to authorize this Agreement 
or to consummate such transactions (other than the adoption of this Agreement 
by the requisite affirmative vote of the stockholders of Socket as required 
by the DGCL).  This Agreement has been duly authorized and validly executed 
and delivered by Socket and constitutes a legal, valid and binding obligation 
of Socket, enforceable against Socket in accordance with its terms.  Socket 
has taken all appropriate actions so that the restrictions on business 
combinations contained in Section 203 of the DGCL will not apply with respect 
to or as a result of the Transactions.

       SECTION 2.04   NO CONFLICT; REQUIRED FILINGS AND CONSENTS.

            (a)   The execution and delivery of this Agreement by Socket do 
not, and the performance of this Agreement by Socket will not, (i) conflict 
with or violate any provision of the Restated Certificate of Incorporation or 
By-Laws of Socket, (ii) assuming that all consents, approvals, authorizations 
and other actions described in Section 2.04(b) have been obtained and all 
filings and obligations described in Section 2.04(b) have been made, conflict 
with or violate any foreign or domestic law, statute, ordinance, rule, 
regulation, treaty, directive, order, judgment or decree ("Law") applicable 
to Socket or by which any property or asset of Socket is bound or affected, 
or (iii) except as set forth in Section 2.04(a) of the Socket Disclosure 
Schedule, result in any breach of or constitute a default (or an event which 
with notice or lapse of time or both would become a default) under, or give 
to others any right of termination, amendment, acceleration or cancellation 
of, or result in the creation of a lien or other encumbrance on any property 
or asset of Socket pursuant to, any note, bond, mortgage, indenture, 
contract, agreement, lease, license, permit, franchise or other instrument or 
obligation, except, with respect to clauses (ii) and (iii), for any such 
conflicts, violations, breaches, defaults, or other occurrences which would 
neither, individually or in the aggregate, (A) have a Socket Material Adverse 
Effect nor (B) prevent or materially delay the performance of this Agreement 
by Socket.

            (b)   The execution and delivery of this Agreement by Socket do 
not, and the performance of this Agreement by Socket will not, require any 
consent, approval, authorization or permit of, or filing with or notification 
to, any domestic or foreign governmental or regulatory authority 
("Governmental Entity"), except for (i) applicable requirements of the FSA, 
the Securities Act of 1933, as amended (together with the rules and 
regulations promulgated thereunder, the "Securities Act"), the NASD, the 
filing of a request with the Stockholm District Court with regard to the 
compulsory acquisition described in Section 1.04, and as set forth in Section 
2.04(b) of the Socket Disclosure Schedule and (ii) where failure to obtain 
such consents, approvals, authorizations or permits, or to make such filings 
or notifications, would not (A) prevent or materially delay consummation of 
the Transactions, (B) otherwise prevent Socket from performing its material 
obligations under this Agreement, and (C) individually or in the aggregate, 
have a Socket Material Adverse Effect.

       SECTION 2.05   PERMITS; COMPLIANCE.  Socket is in possession of all 
franchises, grants, authorizations, licenses, permits, easements, variances, 
exceptions, consents, certificates, approvals and orders of any Governmental 
Entity necessary for Socket to own, lease and operate its properties or to 
carry on its business as it is now being conducted (the "Socket Permits"), 
except where the failure to have, or the suspension or cancellation of, any 
of the Socket Permits would neither, individually or in the aggregate, (A) 
have a Socket Material Adverse Effect nor (B) prevent or materially delay the 
performance of this Agreement by Socket, and, 


<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 6


as of the date of this Agreement, no suspension or cancellation of any of the 
Socket Permits is pending or, to the actual knowledge of the executive 
officers of Socket, threatened, except where the failure to have, or the 
suspension or cancellation of, any of the Socket Permits would neither, 
individually or in the aggregate, (A) have a Socket Material Adverse Effect 
nor (B) prevent or materially delay the performance of this Agreement by 
Socket.  Socket is not in conflict with, or in default or violation of, (i) 
any Law applicable to Socket or by which any property or asset of Socket is 
bound or affected or (ii) any Socket Permits, except for any such conflicts, 
defaults or violations that would neither, individually or in the aggregate, 
(A) have a Socket Material Adverse Effect nor (B) prevent or materially delay 
the performance of this Agreement by Socket.

       SECTION 2.06   SEC FILINGS; FINANCIAL STATEMENTS.

            (a) Socket has filed all forms, reports and documents required to 
be filed by it under the Securities Exchange Act of 1934, as amended 
(together with the rules and regulations promulgated thereunder, the 
"Exchange Act") since January 1, 1993 through the date of this Agreement 
(collectively, the "Socket SEC Reports").  The Socket SEC Reports (i) were 
prepared in accordance with the requirements of the Exchange Act and (ii) did 
not at the time they were filed contain any untrue statement of a material 
fact or omit to state a material fact required to be stated therein or 
necessary in order to make the statements made therein, in the light of the 
circumstances under which they were made, not misleading.

            (b) Each of the financial statements (including, in each case, 
any notes thereto) contained in the Socket SEC Reports was prepared in 
accordance with United States generally accepted accounting principles 
applied on a consistent basis throughout the periods indicated (except as may 
be indicated in the notes thereto) and each presented fairly, in all material 
respects, the financial position of Socket as at the respective dates thereof 
and the consolidated operating results for the respective periods indicated 
therein, except as otherwise noted therein (subject, in the case of unaudited 
statements, to normal and recurring year-end adjustments which were not and 
are not expected, individually or in the aggregate, to have a Socket Material 
Adverse Effect).

            (c)   Except as and to the extent set forth on the balance sheet 
of Socket as of December 31, 1996, including the notes thereto, Socket has no 
liabilities or obligations of any nature (whether accrued, absolute, 
contingent or otherwise) that would be required to be reflected on a balance 
sheet or in notes thereto prepared in accordance with United States generally 
accepted accounting principles, except for liabilities or obligations 
incurred in the ordinary course of business since December 31, 1996 that 
would neither, individually or in the aggregate, (A) have a Socket Material 
Adverse Effect nor (B) prevent or materially delay the performance of this 
Agreement by Socket.

       SECTION 2.07   ABSENCE OF CERTAIN CHANGES OR EVENTS.  Since January 1, 
1997, except as contemplated by or as disclosed in this Agreement or as set 
forth in Section 2.07 of the Socket Disclosure Schedule, Socket has conducted 
its business only in the ordinary course and in a manner consistent with past 
practice and, since such date, there has not been (a) any Socket Material 
Adverse Effect, (b) any event that could reasonably be expected to prevent or 
materially delay the performance of this Agreement by Socket, (c) any 
material change by Socket in its accounting methods, principles or practices, 
(d) any declaration, setting aside or payment of any dividend or distribution 
in respect of the shares of Socket Common Stock or any redemption, purchase 
or other acquisition of any of Socket's securities, or (e) any increase in 
the compensation or benefits or establishment of any bonus, insurance, 
severance, deferred compensation, pension, retirement, profit sharing, stock 
option (including, without limitation, the granting of stock options, stock 
appreciation rights, performance awards or restricted stock awards), stock 
purchase or other employee benefit plan, or any other increase in the 
compensation 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 7


payable or to become payable to any executive officers of Socket except in 
the ordinary course of business consistent with past practice or except as 
required by applicable Law.

       SECTION 2.08   EMPLOYEE BENEFIT PLANS; LABOR MATTERS.

            (a)   With respect to each material employee benefit plan, 
program, arrangement and contract (including, without limitation, any 
"employee benefit plan", as defined in section 3(3) of the Employee 
Retirement Income Security Act of 1974, as amended ("ERISA")), maintained or 
contributed to by Socket or with respect to which Socket could incur material 
liability under section 4069, 4212(c) or 4204 of ERISA (the "Socket Benefit 
Plans"), Socket will make available to Cetronic, promptly after the date 
hereof, a true and complete copy of (i) the most recent annual report (Form 
5500) filed with the Internal Revenue Service (the "IRS"), (ii) such Socket 
Benefit Plan, (iii) each trust agreement relating to such Socket Benefit 
Plan, (iv) the most recent summary plan description for each Socket Benefit 
Plan for which a summary plan description is required, (v) the most recent 
actuarial report or valuation relating to a Socket Benefit Plan subject to 
Title IV of ERISA and (vi) the most recent determination letter, if any, 
issued by the IRS with respect to any Socket Benefit Plan qualified under 
section 401 (a) of the Code.

            (b)   Except as set forth in Section 2.08(b) of the Socket 
Disclosure Schedule, with respect to the Socket Benefit Plans, no event has 
occurred and, to the knowledge of Socket, there exists no condition or set of 
circumstances in connection with which Socket could be subject to any 
liability under the terms of such Socket Benefit Plans, ERISA, the Code or 
any other applicable Law which would have a Socket Material Adverse Effect).

            (c)   All contributions or premiums due from Socket with respect 
to any of the Socket Benefit Plans have been made as required under ERlSA or 
have been accrued on Socket's financial statements as of March 31, 1997, or 
will be made prior to the Closing.  Each Socket Benefit Plan has been 
maintained in compliance with its terms and with the requirements prescribed 
by any and all statutes, orders, rules and regulations, including, without 
limitation, ERISA and the Code, which are applicable to such Socket Benefit 
Plans, except as would not have a Socket Material Adverse Effect.

            (d)   Except as set forth in Section 2.08(d) of the Socket 
Disclosure Schedule, Socket is not a party to any collective bargaining or 
other labor union contract applicable to persons employed by Socket and no 
collective bargaining agreement or other labor union contract is being 
negotiated by Socket.  As of the date of this Agreement, there is no labor 
dispute, strike or work stoppage against Socket pending or threatened in 
writing which may interfere with the business activities of Socket, except 
where such dispute, strike or work stoppage would not have a Socket Material 
Adverse Effect.  As of the date of this Agreement, to the knowledge of 
Socket, neither Socket nor its representatives or employees has committed any 
unfair labor practices in connection with the operation of the respective 
businesses of Socket, and there is no charge or complaint against Socket by 
the National Labor Relations Board or any comparable state or foreign agency 
pending or threatened in writing, except where such unfair labor practice, 
charge or complaint would not have a Socket Material Adverse Effect.

            (e)   Socket has made available to Cetronic true and complete (i) 
copies of all severance and employment agreements with directors, officers or 
employees of Socket; (ii) copies of all severance programs and policies of 
Socket or relating to its employees; and (iii) copies of all plans, programs, 
agreements and other arrangements of Socket with or relating to its employees 
which contain change of control provisions.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 8


            (f)   Except as provided in Section 2.08 of the Socket Disclosure 
Schedule or as otherwise required by Law, no Socket Benefit Plan provides 
retiree medical or retiree life insurance benefits to any person.

       SECTION 2.09   CONTRACTS; DEBT INSTRUMENTS.  Except as disclosed in 
Section 2.09 of the Socket Disclosure Schedule, there is no contract or 
agreement that is material to the business, financial condition or results of 
operations of Socket (each, a "Socket Material Contract").  Socket is not in 
violation of or in default under (nor does there exist any condition which 
with the passage of time or the giving of notice would cause such a violation 
of or default under) any loan or credit agreement, note, bond, mortgage, 
indenture or lease, or any other contract, agreement, arrangement or 
understanding to which it is a party or by which it or any of its properties 
or assets is bound, except for violations or defaults that would not, 
individually or in the aggregate, result in a Socket Material Adverse Effect.

       SECTION 2.10   LITIGATION.  Except as disclosed in Section 2.10 of the 
Socket Disclosure Schedule, there is no suit, claim, action, proceeding or 
investigation pending or threatened in writing against Socket before any 
Governmental Entity that, individually or in the aggregate, is reasonably 
likely to have a Socket Material Adverse Effect.  Except as disclosed in 
Section 2.10 of the Socket Disclosure Schedule, Socket is not subject to any 
outstanding Order, writ, injunction or decree which, insofar as can be 
reasonably foreseen, individually or in the aggregate, would have a Socket 
Material Adverse Effect

       SECTION 2.11   ENVIRONMENTAL MATTERS.  Except as disclosed in Section 
2.11 of the Socket Disclosure Schedule or as would not, individually or in 
the aggregate, have a Socket Material Adverse Effect:

            (a)   Socket (i) is in compliance with all applicable 
Environmental Laws (defined below), (ii) holds all Environmental Permits 
(defined below), and (iii) is in compliance with its Environmental Permits.

            (b)   Socket has not received any written request for 
information, or been notified that it is a potentially responsible party, 
under CERCLA (defined below) or any similar state, local or foreign Law.

            (c)   Socket has not entered into or agreed to any consent decree 
or order or is subject to any judgment, decree or judicial order relating to 
compliance with Environmental Laws, Environmental Permits or the 
investigation, sampling, monitoring, treatment, remediation, removal or 
cleanup of Hazardous Materials (defined below), and to the best knowledge of 
Socket, no investigation, litigation or other proceeding is pending or 
threatened in writing with respect thereto.

            (d)   None of the real property owned or leased by Socket is 
listed or, to the best knowledge of Socket, proposed for listing on the 
"National Priorities List" under CERCLA, as updated through the date hereof, 
or any similar state or foreign list of sites requiring investigation or 
cleanup.

       For purposes of this Agreement:

       "CERCLA" means the Comprehensive Environmental Response, Compensation 
and Liability Act of 1980. as amended as of the date hereof.

       "Environmental Laws" means any federal, state, local or foreign 
statute, law, ordinance, regulation, rule, code or order and any enforceable 
judicial or administrative interpretation thereof, including any judicial or 
administrative order, consent decree or judgment, relating to pollution or 
protection of the environment or natural 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 9


resources, including, without limitation, those relating to the use, 
handling, transportation, treatment, storage, disposal, release or discharge 
of Hazardous Materials, as in effect as of the date hereof.

       "Environmental Permits" means any permit, approval, identification 
number, license and other authorization required under any applicable 
Environmental Law.

       "Hazardous Materials" means (a) any petroleum, petroleum products, 
by-products or breakdown products, radioactive materials, asbestos-containing 
materials or polychlorinated biphenyls or (b) any chemical, material or 
substance defined or regulated as toxic or hazardous or as a pollutant or 
contaminant or waste under any applicable Environmental Law.

       SECTION 2.12   TRADEMARKS, PATENTS AND COPYRIGHTS.  Except as set 
forth in Section 2.12 of the Socket Disclosure Schedule, Socket owns or 
possesses adequate licenses or other legal rights to use all patents, patent 
rights, trademarks, trademark rights, trade names, trade dress, trade name 
rights, copyrights, servicemarks, trade secrets, applications for trademarks 
and for servicemarks, mask works, know-how and other proprietary rights and 
information used or held for use in connection with the business of Socket as 
conducted since inception, and as currently conducted or as contemplated to 
be conducted, and Socket is unaware of any assertion or claim challenging the 
validity of any of the foregoing.  The conduct of the business of Socket as 
conducted since inception, as currently conducted and as contemplated to be 
conducted did not, does not and will not infringe in any way any patent, 
patent right, license, trademark, trademark right, trade dress, trade name, 
trade name right, service mark, mask work or copyright of any third party 
that, individually or in the aggregate, could have a Socket Material Adverse 
Effect.  To Socket's knowledge, there are no infringements of any proprietary 
rights owned by or licensed by or to Socket that, individually or in the 
aggregate, could have a Socket Material Adverse Effect.

       SECTION 2.13   TAXES.  Except for such matters that would not have a 
Socket Material Adverse Effect, (a) Socket has timely filed or will timely 
file all returns and reports required to be filed by them with any taxing 
authority with respect to Taxes for any period ending on or before the 
Closing Time, taking into account any extension of time to file granted to or 
obtained on behalf of Socket, (b) all Taxes shown to be payable on such 
returns or reports that are due prior to the Closing Time have been paid or 
will be paid, (c) as of the date hereof, no deficiency for any material 
amount of Tax has been asserted or assessed by a taxing authority against 
Socket, and (d) Socket has provided adequate reserves in their financial 
statements for any Taxes that have not been paid, whether or not shown as 
being due on any returns.  As used in this Agreement, "Taxes" shall mean any 
and all taxes, fees, levies, duties, tariffs, imposts, and other charges of 
any kind (together with any and all interest, penalties, additions to tax and 
additional amounts imposed with respect thereto) imposed by any government or 
taxing authority, including, without limitation: taxes or other charges on or 
with respect to income, franchises, windfall or other profits, gross 
receipts, property, sales, use, capital stock, payroll, employment, social 
security, workers' compensation, unemployment compensation, or net worth; 
taxes or other charges in the nature of excise, withholding, ad valorem, 
stamp, transfer, value added, or gains taxes; license, registration and 
documentation fees; and customers' duties, tariffs, and similar charges.

       SECTION 2.14   BROKERS.  No broker, finder or investment banker is 
entitled to any brokerage, finder's or other fee or commission in connection 
with the Transactions based upon arrangements made by or on behalf of Socket.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 10


       SECTION 2.15   INTERESTED PARTY TRANSACTIONS.  Except as disclosed in 
the Socket SEC Reports filed prior to the date of this Agreement, no officer 
or director of Socket or any "affiliate" or "associate" (as those terms are 
defined in Rule 405 promulgated under the Securities Act) of any such person 
has had, either directly or indirectly, a material interest in: (i) any 
person or entity which purchases from or sells, licenses or furnishes to 
Socket any goods, property, technology or intellectual or other property 
rights or services; or (ii) any oral or written contract or agreement to 
which Socket is a party or by which it may be bound or affected.

       SECTION 2.16   OWNERSHIP OF PROPERTY.  Except as set forth in Section 
2.16 of the Socket Disclosure Schedule, Socket owns its real and personal 
property free and clear of all security interests, mortgages, liens, charges, 
claims, options and encumbrances.  All real and personal property of Socket 
is in generally good repair and is operational and usable in the operations 
of Socket, subject to ordinary wear and tear.  To Socket's knowledge, Socket 
is not in violation of any zoning, building or safety ordinance, regulation 
or requirement or other law or regulation applicable to the operation of 
owned or leased properties (the violation of which would have a Socket 
Material Adverse Effect), or has received any notice of violation with which 
it has not complied, except where such violation would not have a Socket 
Material Adverse Effect.

       SECTION 2.17   MATERIAL RELATIONSHIPS.  Except as set forth in Section 
2.17 of the Socket Disclosure Schedule, Socket has not received notice that 
any of its officers or key employees, and, to its knowledge has not received 
notice that any material customer or supplier or other person having a 
material business relationship with Socket, that such officer, employee, 
customer, supplier or person presently intends to terminate its relationship 
with Socket.

       SECTION 2.18   DISCLOSURE.  No representation or warranty made by 
Socket in this Agreement, nor any document, written information, statement, 
financial statement, certificate or exhibit prepared and furnished or to be 
prepared and furnished by Socket or its representatives pursuant hereto or in 
connection with the transactions contemplated hereby, when taken together, 
contains any untrue statement of a material fact, or omits to state a 
material fact necessary to make the statements or facts contained herein or 
therein not misleading in light of the circumstances under which they were 
furnished.

                                   ARTICLE III

                   REPRESENTATIONS AND WARRANTIES OF CETRONIC

       Except as set forth on the Disclosure Schedule delivered by Cetronic 
to Socket prior to the execution of this Agreement (the "Cetronic Disclosure 
Schedule"), Cetronic hereby represents and warrants to Socket that:

       SECTION 3.01   ORGANIZATION AND QUALIFICATION; SUBSIDIARIES.  Each of 
Cetronic and each subsidiary of Cetronic set forth on Schedule 3.01 of the 
Cetronic Disclosure Schedule (the "Cetronic Subsidiaries") has been duly 
organized and is validly existing and in good standing under the laws of the 
jurisdiction of its incorporation or organization, as the case may be, and 
has the requisite power and authority and all necessary governmental 
approvals to own, lease and operate its properties and to carry on its 
business as it is now being conducted, except where the failure to be so 
organized, existing or in good standing or to have such power, authority and 
governmental approvals would not, individually or in the aggregate, have a 
Cetronic Material Adverse Effect (defined below).  Section 3.01 of the 
Cetronic Disclosure Schedule sets forth a correct and 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 11


complete list of the Cetronic Subsidiaries, the holders of record of each 
Cetronic Subsidiary's outstanding equity, and a correct and complete list of 
each jurisdiction in which each Cetronic Subsidiary is duly qualified and in 
good standing to do business.  Other than the Cetronic Subsidiaries, Cetronic 
does not own, directly or indirectly, any capital stock or other equity 
interest of any corporation or have any direct or indirect equity or 
ownership interest in any other business, whether organized as a corporation, 
partnership, joint venture or otherwise.  Each of Cetronic and the Cetronic 
Subsidiaries is duly qualified or licensed to do business, and is in good 
standing, in each jurisdiction where the character of the properties owned, 
leased or operated by it or the nature of its business makes such 
qualification or licensing necessary, except for such failures to be so 
qualified or licensed and in good standing that would not, individually or in 
the aggregate, have a Cetronic Material Adverse Effect.  For purposes of this 
Agreement, "Cetronic Material Adverse Effect" means any change in or effect 
on the business of Cetronic and the Cetronic Subsidiaries that is, or is 
reasonably likely to be, materially adverse to the business, assets 
(including intangible assets), liabilities (contingent or otherwise), 
condition (financial or otherwise) or results of operations of Cetronic and 
the Cetronic Subsidiaries taken as a whole.  Cetronic has made available to 
Socket complete and correct copies of the articles of association and all 
other corporate organizational documents of Cetronic and each of the Cetronic 
Subsidiaries, in each case as amended to date.

       SECTION 3.02   CAPITALIZATION.  The authorized share capital of 
Cetronic consists of a minimum of SEK 1,000,000 and a maximum of SEK 
4,000,000 to be issued in Cetronic Class A Shares and/or Cetronic Class B 
Shares.  As of the date hereof, (i) 1,600,000 Cetronic Class A Common Shares 
are issued and outstanding, all of which are validly issued and fully paid 
and (ii) 800,000 Cetronic Class B Common Shares are issued and outstanding, 
all of which are validly issued and fully paid.  Except as set forth in 
Section 3.02 of the Cetronic Disclosure Schedule, there are no warrants or 
other rights, arrangements or commitments of any character to which Cetronic 
is a party or by which Cetronic is bound relating to the issued or unissued 
capital stock of Cetronic or any Cetronic Subsidiary or obligating Cetronic 
or any Cetronic Subsidiary to issue or sell any shares of capital stock of, 
or other equity interests in, Cetronic or any Cetronic Subsidiary.  Except as 
set forth in Section 3.02 of the Cetronic Disclosure Schedule, there are no 
outstanding contractual obligations of Cetronic or any Cetronic Subsidiary to 
redeem or otherwise acquire any Cetronic Shares or any capital stock of any 
Cetronic Subsidiary.  Each outstanding share of capital stock of each 
Cetronic Subsidiary is duly authorized, validly issued and fully paid and 
each such share is owned by Cetronic or another Cetronic Subsidiary free and 
clear of all security interests, liens, claims, pledges, options, rights of 
first refusal, agreements, limitations on Cetronic's or such other Cetronic 
Subsidiary's voting rights, charges and other encumbrances of any nature 
whatsoever, except where failure to own such shares free and clear would not, 
individually or in the aggregate, have a Cetronic Material Adverse Effect.  
Except as set forth in Section 3.02 of the Cetronic Disclosure Schedule, 
there are no material outstanding contractual obligations of Cetronic or any 
Cetronic Subsidiary to provide funds to, or make any investment (in the form 
of a loan, capital contribution or otherwise) in, any Cetronic Subsidiary or 
any other person, other than guarantees by Cetronic of any indebtedness of 
any Cetronic Subsidiary.

       SECTION 3.03   AUTHORITY RELATIVE TO THIS AGREEMENT.  Cetronic has all 
necessary corporate power and authority to execute and deliver this Agreement 
and to perform its obligations hereunder and to consummate the transactions 
(including, without limitation, the Transactions) contemplated herein to be 
consummated by Cetronic.  The execution and delivery of this Agreement by 
Cetronic and the consummation by Cetronic of such transactions have been duly 
and validly authorized by all necessary corporate action and no other 
corporate proceedings on the part of Cetronic are necessary to authorize this 
Agreement or to consummate such transactions.  This Agreement has been duly 
authorized and validly executed and delivered by Cetronic and constitutes a 
legal, valid and binding obligation of Cetronic, enforceable against Cetronic 
in accordance with its terms.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 12


       SECTION 3.04   NO CONFLICT; REQUIRED FILINGS AND CONSENTS. 

            (a)   The execution and delivery of this Agreement by Cetronic do 
not, and the performance of this Agreement by Cetronic will not, (i) conflict 
with or violate any provision of the Articles of Association or other 
corporate organization documents of Cetronic or any equivalent organizational 
documents of any Cetronic Subsidiary, (ii) assuming that all consents, 
approvals, authorizations and other actions described in Section 3.04(b) have 
been obtained and all filings and obligations described in Section 3.04(b) 
have been made, conflict with or violate any Law applicable to Cetronic or 
any Cetronic Subsidiary or by which any property or asset of Cetronic or any 
Cetronic Subsidiary is bound or affected, or (iii) result in any breach of or 
constitute a default (or an event which with notice or lapse of time or both 
would become a default) under, or give to others any right of termination, 
amendment, acceleration or cancellation of, or result in the creation of a 
lien or other encumbrance on any property or asset of Cetronic or any 
Cetronic Subsidiary pursuant to, any note, bond, mortgage, indenture, 
contract, agreement, lease, license, permit, franchise or other instrument or 
obligation, including without limitation any grants or subsidized loans or 
other subsidies from state or local Governmental Entities, except, with 
respect to clauses (ii) and (iii), for any such conflicts, violations, 
breaches, defaults, or other occurrences which would neither, individually or 
in the aggregate, (A) have a Cetronic Material Adverse Effect nor (B) prevent 
or materially delay the performance of this Agreement by Cetronic.

            (b)   The execution and delivery of this Agreement by Cetronic do 
not, and the performance of this Agreement by Cetronic will not, require any 
consent, approval, authorization or permit of, or filing with or notification 
to, any Governmental Entity, except (i) for applicable requirements of the 
FSA, the Securities Act, the NASD, the filing of a request with the Stockholm 
District Court with regard to the compulsory acquisition described in Section 
1.05, and (ii) where failure to obtain such consents, approvals, 
authorizations or permits, or to make such filings or notifications, would 
not (A) prevent or materially delay consummation of the Transactions, (B) 
otherwise prevent Cetronic from performing its material obligations under 
this Agreement, and (C) individually or in the aggregate, have a Cetronic 
Material Adverse Effect.

       SECTION 3.05   PERMITS; COMPLIANCE.  Each of Cetronic and the Cetronic 
Subsidiaries is in possession of all franchises, grants, authorizations, 
licenses, permits, easements, variances, exceptions, consents, certificates, 
approvals and orders of any Governmental Entity necessary for Cetronic or any 
Cetronic Subsidiary to own, lease and operate its properties or to carry on 
its business as it is now being conducted (the "Cetronic Permits"), except 
where the failure to have, or the suspension or cancellation of, any of the 
Cetronic Permits would neither, individually or in the aggregate, (A) have a 
Cetronic Material Adverse Effect nor (B) prevent or materially delay the 
performance of this Agreement by Cetronic, and, as of the date of this 
Agreement, no suspension or cancellation of any of the Cetronic Permits is 
pending or, to the actual knowledge of the executive officers of Cetronic, 
threatened, except where the failure to have, or the suspension or 
cancellation of, any of the Cetronic Permits would neither, individually or 
in the aggregate, (A) have a Cetronic Material Adverse Effect nor (B) prevent 
or materially delay the performance of this Agreement by Cetronic.  Neither 
Cetronic nor any Cetronic Subsidiary is in conflict with, or in default or 
violation of, (i) any Law applicable to Cetronic or any Cetronic Subsidiary 
or by which any property or asset of Cetronic or any Cetronic Subsidiary is 
bound or affected or (ii) any Cetronic Permits, except for any such 
conflicts, defaults or violations that would neither, individually or in the 
aggregate, (A) have a Cetronic Material Adverse Effect nor (B) prevent or 
materially delay the performance of this Agreement by Cetronic.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 13


       SECTION 3.06   FINANCIAL STATEMENTS.

            (a)   Each of the consolidated financial annual accounts 
(including, in each case, any notes thereto) of Cetronic since January 1, 
1996 was prepared in accordance with Swedish generally accepted accounting 
principles, in each case applied on a consistent basis throughout the periods 
indicated (except as may be indicated in the notes thereto) and each 
presented fairly, in all material respects, the consolidated financial 
position of Cetronic and the consolidated Cetronic Subsidiaries as at the 
respective dates thereof and the consolidated operating results for the 
respective periods indicated therein, except as otherwise noted therein 
(subject, in the case of unaudited statements, to normal and recurring 
year-end adjustments which were not and are not expected, individually or in 
the aggregate, to have a Cetronic Material Adverse Effect).

            (b)   Except as and to the extent set forth on the consolidated 
balance sheet of Cetronic and the consolidated Cetronic Subsidiaries as of 
December 31, 1996, including the notes thereto, neither Cetronic nor any of 
the Cetronic Subsidiaries has any liabilities or obligations of any nature 
(whether accrued, absolute, contingent or otherwise) that would be required 
to be reflected on a balance sheet or in notes thereto prepared in accordance 
with Swedish generally accepted accounting principles, except for liabilities 
or obligations incurred in the ordinary course of business since December 31, 
1996 that would neither, individually or in the aggregate, (A) have a 
Cetronic Material Adverse Effect nor (B) prevent or materially delay the 
performance of this Agreement by Cetronic.

       SECTION 3.07   ABSENCE OF CERTAIN CHANGES OR EVENTS.  Since January 1, 
1997, except as contemplated by or as set forth in Section 3.07 of the 
Cetronic Disclosure Schedule, Cetronic and the Cetronic Subsidiaries have 
conducted their businesses only in the ordinary course and in a manner 
consistent with past practice and, since such date, there has not been (a) 
any Cetronic Material Adverse Effect, (b) any event that could reasonably be 
expected to prevent or materially delay the performance of this Agreement by 
Cetronic, (c) any material change by Cetronic in its accounting methods, 
principles or practices, (d) any declaration, setting aside or payment of any 
dividend or distribution in respect of the Cetronic Shares or any redemption, 
purchase or other acquisition of any of Cetronic's securities, or (e) any 
increase in the compensation or benefits or establishment of any bonus, 
insurance, severance, deferred compensation, pension, retirement, profit 
sharing, stock option (including, without limitation, the granting of stock 
options, stock appreciation rights, performance awards or restricted stock 
awards), or other employee benefit plan, or any other increase in the 
compensation payable or to become payable to any executive officers of 
Cetronic or any Cetronic Subsidiary except in the ordinary course of business 
consistent with past practice or except as required by applicable law.

       SECTION 3.08   EMPLOYEE BENEFIT PLANS; LABOR MATTERS.

            (a)   Cetronic has made available to Socket a true and complete 
copy of each employee benefit plan, program, arrangement and contract 
maintained by Cetronic or any Cetronic Subsidiary for the benefit of any 
current or former employee, officer or director of Cetronic or any Cetronic 
Subsidiary or with respect to which Cetronic or any Cetronic Subsidiary could 
incur material liability (the "Cetronic Benefit Plans"), and each material 
document prepared in connection with each Cetronic Benefit Plan.

            (b)   With respect to the Cetronic Benefit Plans, no event has 
occurred and, to the knowledge of Cetronic, there exists no condition or set 
of circumstances in connection with which Cetronic or any Cetronic Subsidiary 
could be subject to any liability under the terms of such Cetronic Benefit 
Plans or any applicable Law which would have a Cetronic Material Adverse 
Effect.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 14


            (c)   In addition to the foregoing, and except as would not have 
a Cetronic Material Adverse Effect, with respect to each Cetronic Benefit 
Plan:

                  (i) all employer and employee contributions to each 
Cetronic Benefit Plan required by Law or by the terms of such Cetronic 
Benefit Plan have been made, or if applicable, accrued in accordance with 
normal accounting practices and a pro rata contribution for the period from 
the date hereof to and including the Closing Date has been made or accrued in 
accordance with normal accounting principles;

                  (ii) the fair market value of the assets of each funded 
Cetronic Benefit Plan, the liability of each insurer for any Cetronic Benefit 
Plan funded through insurance or the book reserve established for any 
Cetronic Benefit Plan, together with any accrued contributions, is sufficient 
to procure or provide for the accrued benefit obligations, as of the Closing 
Date, with respect to all current and former participants in such plan 
according to the actuarial assumptions and valuations most recently used to 
determine employer contributions to such Cetronic Benefit Plan and no 
transaction contemplated by this Agreement shall cause such assets or 
insurance obligations to be less than such benefit obligations; and

                  (iii) each Cetronic Benefit Plan required to be registered 
has been registered and has been maintained in good standing with applicable 
regulatory authorities.

            (d)   Except as set forth in Section 3.08(d) of the Cetronic 
Disclosure Schedule, neither Cetronic nor any Cetronic Subsidiary is a party 
to any collective bargaining or other labor union contract applicable to 
persons employed by Cetronic or any Cetronic Subsidiary and no collective 
bargaining agreement or other labor union contract is being negotiated by 
Cetronic or any Cetronic Subsidiary.  As of the date of this Agreement, there 
is no labor dispute, strike or work stoppage against Cetronic or any Cetronic 
Subsidiary pending or threatened in writing that may interfere with the 
respective business activities of Cetronic or any Cetronic Subsidiary, except 
where such dispute, strike or work stoppage would not have a Cetronic 
Material Adverse Effect.  As of the date of this Agreement, to the knowledge 
of Cetronic, none of Cetronic, any Cetronic Subsidiary, or their respective 
representatives or employees, has committed any unfair labor practices in 
connection with the operation of the respective businesses of Cetronic or any 
Cetronic Subsidiary.

            (e)   Cetronic has made available to Socket, promptly after the 
date hereof, true and complete (i) copies of all severance and employment 
agreements with the officers of Cetronic and the Cetronic Subsidiaries (taken 
as a whole); (ii) copies of all severance programs and policies of Cetronic 
with or relating to its officers and (iii) copies of all plans, programs, 
agreements and other arrangements of Cetronic and the Cetronic Subsidiaries 
(taken as a whole) with or relating to their officers which contain change of 
control provisions.

            (f)   Except as otherwise required by Law, no Cetronic Benefit 
Plan provides retiree medical or retiree life insurance benefits to any 
person.

       SECTION 3.09   CONTRACTS; DEBT INSTRUMENTS.  Except as disclosed in 
Section 3.09 of the Cetronic Disclosure Schedule, there is no contract or 
agreement that is material to the business, financial condition or results of 
operations of Cetronic and the Cetronic Subsidiaries taken as a whole (each, 
a "Cetronic Material Contract").  Neither Cetronic nor any Cetronic 
Subsidiary is in violation of or in default under (nor does there exist any 
condition which upon the passage of time or the giving of notice would cause 
such a violation of or default under) any loan or credit agreement, note, 
bond, mortgage, indenture or lease, or any other contract, agreement, 
arrangement or understanding to which it is a party or by which it or any of 
its properties or assets 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 15


is bound, including without limitation any grants or subsidized loans or 
other subsidies from state or local Governmental Entities except for 
violations or defaults that would not, individually or in the aggregate, 
result in a Cetronic Material Adverse Effect.

       SECTION 3.10   LITIGATION.  Except as disclosed in Section 3.10 of the 
Cetronic Disclosure Schedule, there is no suit, claim, action, proceeding or 
investigation pending or threatened in writing against Cetronic or any 
Cetronic Subsidiary before any Governmental Entity which, individually or in 
the aggregate, is reasonably likely to have a Cetronic Material Adverse 
Effect. Except as disclosed in the Section 3.10 of the Cetronic Disclosure 
Schedule, in the case of any suit, claim, action, proceeding or investigation 
relating to Cetronic's operations, or present or former personnel, there has 
been no change since December 31, 1996 in the status of any such matters that 
would be reasonably likely to have a Cetronic Material Adverse Effect.  
Except as disclosed in the Cetronic Reports or in Section 3.10 of the 
Cetronic Disclosure Schedule, neither Cetronic nor any Cetronic Subsidiary is 
subject to any outstanding Order, writ, injunction or decree which, insofar 
as can be reasonably foreseen, individually or in the aggregate, would have a 
Cetronic Material Adverse Effect.

       SECTION 3.11   ENVIRONMENTAL MATTERS.  Except as disclosed in Section 
3.11 the Cetronic Disclosure Schedule or as would not, individually or in the 
aggregate, have a Cetronic Material Adverse Effect:

            (a)   Cetronic and the Cetronic Subsidiaries (i) are in 
compliance with all applicable Environmental Laws, (ii) hold all 
Environmental Permits, and (iii) are in compliance with its Environmental 
Permits.

            (b)   None of Cetronic or any Cetronic Subsidiary has received 
any written request for information, or been notified that it is a 
potentially responsible party, under CERCLA or any similar state, local or 
foreign Law.

            (c)   None of Cetronic or any Cetronic Subsidiary has entered 
into or agreed to any consent decree or order or is subject to any judgment, 
decree or judicial order relating to compliance with Environmental Laws, 
Environmental Permits or the investigation, sampling monitoring, treatment, 
remediation, removal or cleanup of Hazardous Materials, and to the best 
knowledge of Cetronic, no investigation, litigation or other proceeding is 
pending or threatened in writing with respect thereto.

            (d)   None of the real property owned or leased by Cetronic or 
any Cetronic Subsidiary is listed or, to the best knowledge of Cetronic, 
proposed for listing on the "National Priorities List" under CERCLA, as 
updated through the date hereof, or any similar state or foreign list of 
sites requiring investigation or cleanup.

       SECTION 3.12   TRADEMARKS, PATENTS AND COPYRIGHTS.  Except as set 
forth in Section 3.12 of the Cetronic Disclosure Schedule, Cetronic and the 
Cetronic Subsidiaries own or possess adequate licenses or other legal rights 
to use all patents, patent rights, trademarks, trademark rights, trade names, 
trade dress, trade name rights, copyrights, servicemarks, trade secrets, 
applications for trademarks and for servicemarks, mask works, know-how and 
other proprietary rights and information used or held for use in connection 
with the business of Cetronic and the Cetronic Subsidiaries as conducted 
since inception, and as currently conducted or as contemplated to be 
conducted, and Cetronic is unaware of any assertion or claim challenging the' 
validity of any of the foregoing. The conduct of the business of Cetronic and 
the Cetronic Subsidiaries as conducted since inception, as currently 
conducted and as contemplated to be conducted did not, does not and will not 
infringe in any way any patent, 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 16


patent right, license, trademark, trademark right, trade dress, trade name, 
trade name right, service mark, mask work or copyright of any third party 
that, individually or in the aggregate, could have a Cetronic Material 
Adverse Effect. To Cetronic's knowledge, there are no infringements of any 
proprietary rights owned by or licensed by or to Cetronic or any Cetronic 
Subsidiary that, individually or in the aggregate, could have a Cetronic 
Material Adverse Effect.

       SECTION 3.13   TAXES.  Except for such matters that would not have a 
Cetronic Material Adverse Effect, (a) Cetronic and its subsidiaries have 
timely filed or will timely file all returns and reports required to be filed 
by them with any taxing authority with respect to Taxes for any period ending 
on or before the Closing Date, taking into account any extension of time to 
file granted to or obtained on behalf of Cetronic and its subsidiaries, (b) 
all Taxes shown to be payable on such returns or reports that are due prior 
to the Closing Date have been paid or will be paid, (c) as of the date 
hereof, no deficiency for any material amount of Tax has been asserted or 
assessed by a taxing authority against Cetronic or its subsidiaries, and (d) 
Cetronic and its subsidiaries have provided adequate reserves in their 
financial statements for any Taxes that have not been paid, whether or not 
shown as being due on any returns.

       SECTION 3.14   INTERESTED PARTY TRANSACTIONS.  Except as set forth in 
Section 3.14 of the Cetronic Disclosure Schedule, no officer or director of 
Cetronic or any ''affiliate'' or "associate" (as those terms are defined in 
Rule 405 promulgated under the Securities Act) of any such person has had, 
either directly or indirectly, a material interest in: (i) any person or 
entity which purchases from or sells, licenses or furnishes to Cetronic or 
any of the Cetronic Subsidiaries any goods, property, technology or 
intellectual or other property rights or services; or (ii) any oral or 
written contract or agreement to which Cetronic or any of the Cetronic 
Subsidiaries is a party or by which it may be bound or affected.

       SECTION 3.15   OWNERSHIP OF PROPERTY.  Except or as set forth in 
Section 3.15 of the Cetronic Disclosure Schedule, Cetronic and each of the 
Cetronic Subsidiaries owns its real and personal property free and clear of 
all security interests, mortgages, liens, charges, claims, options and 
encumbrances.  All real and personal property of Cetronic and each of the 
Cetronic Subsidiaries is in generally good repair and is operational and 
usable in the operations of Cetronic, subject to ordinary wear and tear.  
Neither Cetronic nor any Cetronic Subsidiary is in violation of any zoning, 
building or safety ordinance, regulation or requirement or other law or 
regulation applicable to the operation of owned or leased properties (the 
violation of which would have a Cetronic Material Adverse Effect), or has 
received any notice of violation with which it has not complied, except where 
such violation would not have a Cetronic Material Adverse Effect.

       SECTION 3.16   MATERIAL RELATIONSHIPS.  Except as set forth in Section 
3.16 to the Cetronic Disclosure Schedule, Cetronic has not received written 
notice that any of its officers or key employees, and to its knowledge has 
not received notice, that any material customer or supplier or other person 
having a material business relationship with Cetronic that such officer, 
employee, customer, supplier or person presently intends to terminate its 
relationship with Cetronic.

       SECTION 3.17   DISCLOSURE.  No representation or warranty made by 
Cetronic in this Agreement, nor any document, written information, statement, 
financial statement, certificate or exhibit prepared and furnished or to be 
prepared and furnished by Cetronic or its representatives pursuant hereto or 
in connection with the transactions contemplated hereby, when taken together, 
contains any untrue statement of a material fact, or omits to state a 
material fact necessary to make the statements or facts contained herein or 
therein not misleading in light of the circumstances under which they were 
furnished.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 17


                                   ARTICLE IV

                                    COVENANTS

       SECTION 4.01   CONDUCT OF BUSINESS BY SOCKET PENDING THE CLOSING.  
Socket agrees that, between the date of this Agreement and the Closing Time, 
except as contemplated by any provision of this Agreement, unless Cetronic 
shall otherwise agree in writing, which agreement shall not be unreasonably 
withheld or delayed, (1) the business of Socket shall be conducted only in, 
and Socket shall not take any action except in, the ordinary course of 
business consistent with past practice and (2) Socket shall use its 
reasonable best efforts to keep available the services of such of the current 
officers, significant employees and consultants of Socket and to preserve the 
current relationships of Socket with such of the customers, suppliers and 
other persons with which Socket has significant business relations as Socket 
deems reasonably necessary in order to preserve substantially intact its 
business organization.  Except as contemplated by any provision of this 
Agreement, the Board of Directors of Socket shall not (unless required by 
applicable Laws or stock exchange regulations) cause or permit Socket to, and 
shall neither cause nor permit any of Socket's affiliates (over which it 
exercises control), or any of their officers, directors, employees and agents 
to, between the date of this Agreement and the Closing Time, directly or 
indirectly, do, or agree to do, any of the following, without the prior 
written consent of Cetronic, which consent shall not be unreasonably withheld 
or delayed:

            (a)   amend or otherwise change its Certificate of Incorporation 
or By-laws or equivalent organizational documents;

            (b)   issue, sell, pledge, dispose of, grant, transfer, lease, 
license, guarantee, encumber, or authorize the issuance, sale, pledge, 
disposition, grant, transfer, lease, license, guarantee or encumbrance of, 
(i) any shares of capital stock of Socket of any class, or securities 
convertible or exchangeable or exercisable for any shares of such capital 
stock, or any options, warrants or other rights of any kind to acquire any 
shares of such capital stock, or any other ownership interest (including, 
without limitation, any phantom interest), of Socket except for the issuance 
of (A) a maximum of 381,517 shares of Socket Common Stock issuable pursuant 
to the Socket Options outstanding on the date of this Agreement and the 
issuance, in the ordinary course of business and consistent with past 
practice, of the Socket Options to purchase a maximum of number of 500,000 
shares of Socket Common Stock pursuant to the Socket Stock Option Plans in 
effect on the date of this Agreement (which includes 300,000 shares subject 
to stockholder approval at the Socket 1997 Annual Meeting of Stockholders) 
and the shares of Socket Common Stock issuable pursuant to such Socket 
Options, in accordance with the terms of the Socket Stock Option Plan (it 
being understood that Socket may grant a significant number of Socket Options 
in connection with hiring and retaining a new Chief Executive Officer, and 
that any such grant shall be deemed to be in the ordinary course of business 
consistent with past practice; provided, that any such grant shall be 
reasonably acceptable to Cetronic); and (B) a number of shares (determined as 
provided in the Certificate of Designations relating thereto) of Socket 
Common Stock issuable upon conversion of 4,052 shares of Socket Series A 
Preferred Stock; or (ii) any property or assets of Socket or any Socket 
Subsidiary, except in the ordinary course of business and in a manner 
consistent with past practice;

            (c)   declare, set aside, make or pay any dividend or other 
distribution, payable in cash, stock, property or otherwise, with respect to 
any of its capital stock;

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 18


            (d)   reclassify, combine, split, subdivide or redeem, purchase 
or otherwise acquire, directly or indirectly, any of its capital stock;

            (e)   (i) acquire (including, without limitation, by merger, 
consolidation, or acquisition of stock or assets) any interest in any 
corporation, partnership, other business organization, person or any division 
thereof or any assets, other than acquisitions of assets in the ordinary 
course of business consistent with past practice and any other acquisitions 
for consideration that are not, in the aggregate, in excess of $50,000; (ii) 
incur any indebtedness for borrowed money or issue any debt securities or 
assume, guarantee or endorse, or otherwise as an accommodation become 
responsible for, the obligations of any person for borrowed money, except for 
indebtedness for borrowed money incurred in the ordinary course of business 
and consistent with past practice or incurred to refinance outstanding 
indebtedness for borrowed money existing on the date of this Agreement or 
other indebtedness for borrowed money with a maturity of not more than one 
year in a principal amount not, in the aggregate, in excess of $50,000; (iii) 
terminate, cancel or request any material change in, or agree to any material 
change in any Socket Material Contract or enter into any contract or 
agreement material to the business, results of operations or financial 
condition of Socket, in either case other than in the ordinary course of 
business, consistent with past practice; (iv) make or authorize any capital 
expenditure, other than capital expenditures that are not, in the aggregate, 
in excess of $50,000 for Socket; or (v) enter into or amend any contract, 
agreement, commitment or arrangement that, if fully performed, would not be 
permitted under this Section 4.01(e);

            (f)   increase the compensation payable or to become payable to 
its officers or employees, except for increases in accordance with past 
practices in salaries or wages of employees of Socket who are not officers of 
Socket, or grant any rights to severance or termination pay to, or enter into 
any employment or severance agreement with, any director, officer or other 
employee of Socket, or establish, adopt, enter into or amend any collective 
bargaining, bonus, profit sharing, thrift, compensation, stock option, 
restricted stock, pension, retirement, deferred compensation, employment, 
termination, severance or other plan, agreement, trust, fund, policy or 
arrangement for the benefit of any director, officer or employee, except as 
contemplated by this Agreement, to the extent required by applicable Law or 
the terms of a collective bargaining agreement, or in connection with the 
hiring and retaining of a new Chief Executive Officer (it being understood, 
however, that any such employment agreement or other arrangement entered into 
in connection with hiring and retaining of a new Chief Executive Officer 
shall be on terms reasonably acceptable to Cetronic);

            (g)   take any action with respect to accounting policies or 
procedures, other than actions in the ordinary course of business and 
consistent with past practice;

            (h)   waive, release, assign, settle or compromise any material 
claims or litigation;

            (i)   make any tax election or settle or compromise any material 
federal, state, local or foreign income tax liability; or             

            (j)   authorize or enter into any formal or informal agreement or 
otherwise make any commitment to do any of the foregoing.

       SECTION 4.02   CONDUCT OF BUSINESS BY CETRONIC PENDING THE CLOSING. 
Cetronic agrees that, between the date of this Agreement and the Closing 
Time, except as contemplated by any provision of this Agreement, unless 
Socket shall otherwise agree in writing, which agreement shall not be 
unreasonably withheld or delayed, (1) the business of Cetronic and the 
Cetronic Subsidiaries shall be conducted only in, and the Cetronic and the 
Cetronic Subsidiaries shall not take any action except in, the ordinary 
course of business consistent with past 


<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 19


practice and (2) Cetronic shall use its reasonable best efforts to keep 
available the services of such of the current officers, significant employees 
and consultants of Cetronic and the Cetronic Subsidiaries and to preserve the 
current relationships of Cetronic and the Cetronic Subsidiaries with such of 
the customers, suppliers and other persons with which Cetronic or any 
Cetronic Subsidiary has significant business relations as Cetronic deems 
reasonably necessary in order to preserve substantially intact its business 
organization. Except as contemplated by any provision of this Agreement, 
Cetronic shall not (unless required by applicable Laws or stock exchange 
regulations) cause or permit Cetronic or any Cetronic Subsidiary to, and 
shall neither cause nor permit any of Cetronic's affiliates (over which it 
exercises control), or any of their officers, directors, employees and agents 
to, between the date of this Agreement and the Closing Time, directly or 
indirectly, do, or agree to do, any of the following without the prior 
written consent of Socket, which consent shall not be unreasonably withheld 
or delayed:

            (a)   amend or otherwise change its Articles of Association or 
equivalent organizational documents;

            (b)   issue, sell, pledge, dispose of, grant, transfer, lease, 
license, guarantee, encumber, or authorize the issuance, sale, pledge, 
disposition, grant, transfer, lease, license, guarantee or encumbrance of, 
(i) any shares of capital stock of Cetronic or any Cetronic Subsidiary of any 
class, or securities convertible or exchangeable or exercisable for any 
shares of such capital stock, or any options, warrants or other rights of any 
kind to acquire any shares of such capital stock, or any other ownership 
interest (including, without limitation, any phantom interest), of Cetronic 
or any Cetronic Subsidiary or (ii) any property or assets of Cetronic or any 
Cetronic Subsidiary, except in the ordinary course of business and in a 
manner consistent with past practice;

            (c)   recommend to its stockholders that the stockholders 
declare, set aside, make or pay any dividend or other distribution, payable 
in cash, stock, property or otherwise, with respect to any of its capital 
stock;

            (d)   reclassify, combine, split, subdivide or redeem, purchase 
or otherwise acquire, directly or indirectly, any of its capital stock;

            (e)   (i) acquire (including, without limitation, by merger, 
consolidation, or acquisition of stock or assets) any interest in any 
corporation, partnership, other business organization, person or any division 
thereof or any assets, other than acquisitions of assets in the ordinary 
course of business consistent with past practice and any other acquisitions 
for consideration that are not, in the aggregate, in excess of $50,000; (ii) 
incur any indebtedness for borrowed money or issue any debt securities or 
assume, guarantee or endorse, or otherwise as an accommodation become 
responsible for, the obligations of any person for borrowed money, except for 
indebtedness for borrowed money incurred in the ordinary course of business 
and consistent with past practice or incurred to refinance outstanding 
indebtedness for borrowed money existing on the date of this Agreement or 
other indebtedness for borrowed money with a maturity of not more than one 
year in a principal amount not, in the aggregate, in excess of $50,000; (iii) 
terminate, cancel or request any material change in, or agree to any material 
change in any Cetronic Material Contract or enter into any contract or 
agreement material to the business, results of operations or financial 
condition of Cetronic and the Cetronic Subsidiaries taken as a whole, in 
either case other than in the ordinary course of business, consistent with 
past practice; (iv) make or authorize any capital expenditure, other than 
capital expenditures that are not, in the aggregate, in excess of $50,000 for 
Cetronic and the Cetronic Subsidiaries taken as a whole; or (v) enter into or 
amend any contract, agreement, commitment or arrangement that, if fully 
performed, would not be permitted under this Section 4.02(e);

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 20


            (f)   increase the compensation payable or to become payable to 
its officers or employees, except for increases in accordance with past 
practices in salaries or wages of employees of Cetronic or any Cetronic 
Subsidiary who are not officers of Cetronic, or grant any rights to severance 
or termination pay to, or enter into any employment or severance agreement 
with, any director, officer or other employee of Cetronic or any Cetronic 
Subsidiary, or establish, adopt, enter into or amend any collective 
bargaining, bonus, profit sharing, thrift, compensation, stock option, 
restricted stock, pension, retirement, deferred compensation, employment, 
termination, severance or other plan, agreement, trust, fund, policy or 
arrangement for the benefit of any director, officer or employee, except to 
the extent required by applicable Law or the terms of a collective bargaining 
agreement;

            (g)   take any action with respect to accounting policies or 
procedures, other than actions in the ordinary course of business and 
consistent with past practice;

            (h)   waive, release, assign, settle or compromise any material 
claims or litigation;

            (i)   make any tax election or settle or compromise any material 
federal, state, local or foreign income tax liability;

             (j)  take any action that would result in a reduction of 
Cetronic's cash balances (accounted for using generally accepted accounting 
principles) to an amount less than SEK 18,400,000 (if the Closing Date shall 
occur on or prior to September 30, 1997) or SEK 14,700,000 (if the Closing 
Date shall occur after September 30, 1997 but prior to November 1, 1997) (the 
"Minimum Cash Balance Requirement"); or

            (k)   authorize or enter into any formal or informal agreement or 
otherwise make any commitment to do any of the foregoing.

       SECTION 4.03   COOPERATION.  Cetronic and Socket shall coordinate and 
cooperate in connection with (i) the preparation of the Registration 
Statement and the Disclosure Documents, (ii) determining whether any action 
by or in respect of, or filing with, any Governmental Entity is required, or 
any actions, consents, approvals or waivers are required to be obtained from 
parties to any Socket Material Contracts or Cetronic Material Contracts, in 
connection with the consummation of the Transactions and (iii) seeking any 
such actions, consents, approvals or waivers or making any such filings, 
furnishing information required in connection therewith or with the 
Registration Statement and the Disclosure Documents and timely seeking to 
obtain any such actions, consents, approvals or waivers.

       SECTION 4.04   NOTICES OF CERTAIN EVENTS.  Each of Cetronic and Socket 
shall give prompt notice to the other of (i) any event occurring subsequent 
to the date of this Agreement that would reasonably be likely to render any 
representation and warranty of Cetronic or Socket untrue or inaccurate in any 
material respect, (ii) any notice or other communication from any person 
alleging that the consent of such person is or may be required in connection 
with the Transactions, (iii) any notice or other communication from any 
Governmental Entity in connection with the Transactions, (iv) any actions, 
suits, claims, investigations or proceedings commenced or, to the best of its 
knowledge threatened in writing against, relating to or involving or 
otherwise affecting Cetronic, Socket or their subsidiaries that relate to the 
consummation of the Transactions, (v) the occurrence of a default or event 
that, with notice or lapse of time or both, will become a default under any 
Socket Material Contract or Cetronic Material Contract, and (vi) any change 
that is reasonably likely to result in a Socket Material Adverse Effect or a 
Cetronic Material Adverse Effect or is likely to delay or impede the ability 
of either Socket or 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 21


Cetronic to consummate the transactions contemplated by this Agreement or to 
fulfill its obligations set forth herein.

       SECTION 4.05   CONTRACTUAL CONSENTS.  Prior to or at the Closing Time, 
each of Cetronic and Socket shall use its reasonable best efforts to prevent 
the occurrence, as a result of the Transactions, of a change of control or 
any event which constitutes a default (or an event which with notice or lapse 
of time or both would become a default) under any material contract, 
agreement, lease, license, permit, franchise or other instrument or 
obligation to which it or any of its subsidiaries is a party.

                                    ARTICLE V

                              ADDITIONAL AGREEMENTS

       SECTION 5.01   REGISTRATION STATEMENT; DISCLOSURE DOCUMENTS.

            (a)   As promptly as practicable after the execution of this 
Agreement, Cetronic and Socket shall jointly prepare and Socket shall file 
with the SEC a single document that will constitute (i) the proxy statement 
of Socket relating to the special meeting of Socket's stockholders (the 
"Socket Stockholders' Meeting") to be held to consider (A) adoption of this 
Agreement, (B) approval of a one-for-five reverse split of the outstanding 
Socket Common Stock so that every five shares of Socket Common Stock shall 
thereafter be consolidated into one Share of Common Stock as soon as 
practicable following the Closing (the "Reverse Stock Split"), (C) approval 
of an amendment to increase the authorized number of shares of Socket Common 
Stock from 15,000,000 to 25,000,000 (based on shares as constituted prior to 
the Reverse Stock Split) and (D) approval of the 1997 Stock Option Plan for 
Non-U.S. Employees and the reservation of shares of Socket Common Stock for 
issuance thereunder; (ii) the prospectus forming part of the registration 
statement on Form S-4 of Socket (together with all amendments thereto, the 
"Registration Statement"), in connection with the registration under the 
Securities Act of the Socket Common Stock to be issued to the stockholders of 
Cetronic pursuant to the Exchange Offer, (iii) the offer to purchase to be 
used by Socket in connection with the Exchange Offer, and (iv) the proxy 
statement of Cetronic relating to the special meeting of Cetronic's 
stockholders (the "Cetronic Stockholders' Meeting") to be held to consider 
the waiver or termination of the preemptive rights (the "Preemptive Rights 
Waiver") of Cetronic stockholders in connection with the exchange of their 
Cetronic Shares in the Exchange Offer (such document, together with any 
amendments thereof or supplements thereto, the "Joint Proxy Statement").  
Substantially contemporaneously with the filing of the Joint Proxy Statement 
with the SEC, copies thereof shall be provided to the National Association of 
Securities Dealers ("NASD") and the PSE.  Cetronic and Socket each shall use 
its reasonable best efforts to cause the Registration Statement to become 
effective as promptly as practicable, and, prior to the effective date of the 
Registration Statement (the "Registration Statement Effective Date"), Socket 
shall take all or any action required under any applicable Laws in connection 
with the issuance of Socket Common Stock pursuant to the Exchange Offer.  
Cetronic or Socket, as the case may be, shall furnish all information 
concerning Cetronic or Socket as the other party may reasonably request in 
connection with such actions and the preparation of the Registration 
Statement and Disclosure Documents.  As promptly as practicable after the 
Registration Statement Effective Date, the Joint Proxy Statement will be 
mailed to the stockholders of Cetronic and Socket, and, in the case of 
Cetronic, Swedish language translations or summaries thereof or a separate 
Swedish language prospectus, as may be necessary or appropriate, will be 
provided to its registered stockholders.  The Joint Proxy Statement, the 
Swedish language prospectus, Registration Statement and all other documents 
filed with the SEC, FSA or other U.S. or Swedish Governmental Entity, 
including any translations 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 22


or summaries thereof, are referred to herein as the "Disclosure Documents." 
Cetronic and Socket shall cause the Disclosure Documents to comply as to form 
and substance in all material respects with the applicable requirements of 
(i) the Exchange Act, including, without limitation, Sections 14(a) and 14(d) 
thereof and the respective regulations promulgated thereunder, (ii) the NASD, 
the PSE and, with respect to the Swedish language prospectus, the FSA, (iii) 
the Securities Act, (iv) the NBK Recommendations Concerning Public Offers for 
the Acquisition of Shares (1988), with respect to the Swedish language 
prospectus, and (v) the DGCL.

            (b)   (i) The Disclosure Documents shall include the unanimous 
and unconditional recommendation of the Board of Directors of Socket to the 
stockholders of Socket that they vote in favor of adoption of this Agreement 
and approval of the Reverse Stock Split; provided, however, that the Board of 
Directors of Socket may, at any time prior to the Closing, withdraw, modify 
or change any such recommendation if the Board of Directors of Socket 
determines in good faith that failure to so withdraw, modify or change its 
recommendation would cause the Board of Directors of Socket to breach its 
fiduciary duties to Socket's stockholders under applicable Laws after receipt 
of advice to such effect from independent legal counsel (who may be Socket's 
regularly engaged independent legal counsel).

                  (ii) The Disclosure Documents shall include the unanimous 
and unconditional recommendation of the Board of Directors of Cetronic to the 
stockholders of Cetronic that they approve the Preemptive Rights Waiver and 
accept the Exchange Offer; provided, however, that the Board of Directors of 
Cetronic may, at any time prior to the Closing, withdraw, modify or change 
any such recommendations if the Board of Directors of Cetronic determines in 
good faith that failure to so withdraw, modify or change its recommendation 
would cause the Board of Directors of Cetronic to breach its fiduciary duties 
to Cetronic or Cetronic's stockholders under Swedish Laws after receipt of 
advice to such effect from independent legal counsel (who may be Cetronic's 
regularly engaged independent legal counsel).

            (c)   No amendment or supplement to the Disclosure Documents or 
the Registration Statement will be made without the approval of Cetronic and 
Socket, which approval shall not be unreasonably withheld or delayed.  Each 
of Cetronic and Socket will advise the others promptly after it receives 
notice thereof, of the time when the Registration Statement has become 
effective or any supplement or amendment has been filed, of the issuance of 
any stop order, of the suspension of the qualification of Socket Common Stock 
issuable in connection with the Exchange Offer for offering or sale in any 
jurisdiction, or of any request by the SEC, the NASD, the PSE or the FSA for 
amendment of the Disclosure Documents or the Registration Statement or 
comments thereon and responses thereto or requests by the SEC, the NASD, the 
PSE or the FSA for additional information

            (d)   The information supplied by Cetronic for inclusion in the 
Registration Statement and the Disclosure Documents shall not, at (i) the 
time the Registration Statement is declared effective, (ii) the time the 
Joint Proxy Statement (or any amendment thereof or supplement thereto) or 
Swedish language prospectus is first mailed to the stockholders of Cetronic 
and Socket, (iii) the time of the Socket Stockholders' Meeting and the 
Cetronic Stockholders' Meeting and (iv) the Closing Date, contain any untrue 
statement of a material fact or fail to state any material fact required to 
be stated therein or necessary in order to make the statements therein not 
misleading.  If at any time prior to the Closing, any event or circumstance 
relating to Cetronic or any Cetronic Subsidiary, or their respective officers 
or directors, should be discovered by Cetronic that should be set forth in an 
amendment or a supplement to the Registration Statement or Disclosure 
Documents, Cetronic shall promptly inform Socket.  All documents that 
Cetronic is responsible for filing with any Governmental Entity in 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 23


connection with the Transactions will comply as to form and substance in all 
material respects with the applicable requirements of the FSA, the DGCL, the 
Securities Act, the Exchange Act and other applicable Laws.

            (e)   The information supplied by Socket for inclusion in the 
Registration Statement and the Disclosure Documents shall not, at (i) the 
time the Registration Statement is declared effective, (ii) the time the 
Joint Proxy Statement (or any amendment thereof or supplement thereto) is 
first mailed to the stockholders of Socket and Cetronic, (iii) the time of 
the Socket Stockholders' Meeting, and (v) the Closing Date, contain any 
untrue statement of a material fact or fail to state any material fact 
required to be stated therein or necessary in order to make the statements 
therein not misleading.  If at any time prior to the Closing any event or 
circumstance relating to Socket or any Socket Subsidiary, or their respective 
officers or directors, should be discovered by Socket that should be set 
forth in an amendment or a supplement to the Registration Statement or 
Disclosure Documents, Socket shall promptly inform Cetronic.  All documents 
that Socket is responsible for filing with any Governmental Entity in 
connection with the Transactions will comply as to form and substance in all 
material respects with the applicable requirements of the FSA, DGCL, the 
Securities Act, the Exchange Act and other applicable Laws.

       SECTION 5.02   STOCKHOLDERS' MEETINGS.  (a) Socket shall call and hold 
the Socket Stockholders' Meeting as promptly as practicable after the 
Registration Statement Effective Date for the purpose of voting upon the 
adoption of this Agreement and the approval of the Reverse Stock Split, and 
Cetronic and Socket will cooperate with each other to cause the Socket 
Stockholders' Meeting to be held on or proximate to the Expiration Date of 
the Exchange Offer.  Socket shall use its reasonable best efforts (through 
its agents or otherwise) to solicit from its stockholders proxies in favor of 
the adoption of this Agreement and approval of the Reverse Stock Split, and 
shall take all other action necessary or advisable to secure the affirmative 
vote of its stockholders required by the DGCL to secure such adoption and 
approval, except to the extent that the Board of Directors of Socket 
determines in good faith that doing so would cause the Board of Directors of 
Socket to breach its fiduciary duties to Socket's stockholders under 
applicable Laws after receipt of advice to such effect from independent legal 
counsel (who may be Socket's regularly engaged independent legal counsel).

            (b)   Cetronic shall call and hold the Cetronic Stockholders' 
Meeting as promptly as practicable after the Registration Statement Effective 
Date for the purpose of voting upon the approval of the Preemptive Rights 
Waiver, and Cetronic and Socket will cooperate with each other to cause the 
Cetronic Stockholders' Meeting to be held on or proximate to the Expiration 
Date of the Exchange Offer.  Cetronic shall use its reasonable best efforts 
(through its agents or otherwise) to solicit from its stockholders proxies in 
favor of the approval of the Preemptive Rights Waiver, and shall take all 
other action necessary or advisable to secure the affirmative vote of its 
stockholders required by the FSA to secure such approval, except to the 
extent that the Board of Directors of Cetronic determines in good faith that 
doing so would cause the Board of Directors of Cetronic to breach its 
fiduciary duties to Cetronic's stockholders under applicable Laws after 
receipt of advice to such effect from independent legal counsel (who may be 
Cetronic's regularly engaged independent legal counsel).

       SECTION 5.03   ACCESS TO INFORMATION; CONFIDENTIALITY.  (a) Except as 
required pursuant to any confidentiality agreement or similar agreement or 
arrangement to which Cetronic or Socket or any of their respective 
subsidiaries is a party or pursuant to applicable Law or the regulations or 
requirements of any stock exchange or other regulatory organization with 
whose rules the parties are required to comply, from the date of this 
Agreement to the Closing Date, Cetronic and Socket shall (and shall cause 
their respective subsidiaries to): (i) provide to the other (and its 
officers, directors, employees, accountants, consultants, legal counsel, 
agents and 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 24


other representatives, collectively, "Representatives") access at reasonable 
times upon prior notice to the officers, employees, agents, properties, 
offices and other facilities of the other and its subsidiaries and to the 
books and records thereof and (ii) furnish promptly such information 
concerning the business, properties, contracts, assets, liabilities, 
personnel and other aspects of the other party and its subsidiaries as the 
other party or its Representatives may reasonably request.  No investigation 
conducted pursuant to this Section 5.03 shall affect or be deemed to modify 
any representation or warranty made in this Agreement.

            (b)   The parties shall comply with, and shall cause their 
respective Representatives to comply with, all of their respective 
obligations under any and all the Confidentiality Agreements between Cetronic 
and Socket with respect to the information disclosed pursuant to this Section 
5.03.

       SECTION 5.04   NO SOLICITATION OF TRANSACTIONS.  (a) From and after 
the date of this Agreement until the earlier of the Closing Time or the 
termination of this Agreement in accordance with its terms, each party to 
this Agreement will not, directly or indirectly, and will instruct its 
officers, directors, employees, subsidiaries, agents or advisors or other 
representatives (including, without limitation, any investment banker, 
attorney or accountant retained by it), not to, directly or indirectly, 
solicit, initiate or take any action intended, designed or reasonably likely 
to encourage (including by way of furnishing nonpublic information), or take 
any other action intended, designed or reasonably likely to facilitate, any 
inquiries or the making of any proposal or offer (including, without 
limitation, any proposal or offer to its stockholders) that constitutes, or 
may reasonably be expected to lead to, any Competing Transaction, or enter 
into or maintain or continue discussions or negotiate with any person or 
entity in furtherance of such inquiries or to obtain a Competing Transaction, 
or agree to or endorse any Competing Transaction, or authorize or permit any 
of the officers, directors or employees of such party or any of its 
subsidiaries, or any investment banker, financial advisor, attorney, 
accountant or other representative retained by such party or any of such 
party's subsidiaries, to take any such action.  Each party to this Agreement 
shall notify the other parties promptly if any proposal or offer, or any 
inquiry or contact with any person with respect thereto, regarding a 
Competing Transaction is made.  Each party to this Agreement immediately 
shall cease and cause to be terminated all existing discussions or 
negotiations with any parties conducted heretofore with respect to a 
Competing Transaction and promptly request that all confidential information 
furnished on behalf of such party be returned.  Each party to this Agreement 
agrees not to release any third party from, or waive any provision of, any 
confidentiality or standstill agreement to which it is a party.

            (b)   Notwithstanding anything to the contrary in Section 5.04 
the Board of Directors of each party to this Agreement may cause such party 
to furnish information to, and may participate in discussions or negotiations 
with, any person that, unsolicited by such party, has submitted a written 
proposal to such Board of Directors relating to a Competing Transaction, in 
each case to the extent that the Board of Directors of such party determines 
in good faith that the failure to do so would cause the Board of Directors of 
such party to breach its fiduciary duties to such party or its stockholders 
under applicable Laws after receipt of advice to such effect from independent 
legal counsel (who may be such party's regularly engaged independent legal 
counsel) and, notwithstanding anything to the contrary contained in this 
Agreement, any such furnishing of information and participation in 
discussions or negotiations shall not constitute a breach of this Agreement 
by such party; provided, however, that any party furnishing such information, 
or participating in such discussions or negotiations shall notify the other 
promptly of such action and shall, in any such notice, indicate the identity 
of the person making the written proposal referred to in this Section 5.04, 
and, in reasonable detail, the terms and conditions of such written proposal.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 25


            (c)   A "Competing Transaction" means any of the following 
involving Cetronic or Socket, as the case may be (other than the Transactions 
contemplated by this Agreement): (i) a merger, consolidation, share exchange, 
business combination or other similar transaction; (ii) any sale, lease, 
exchange transfer or other disposition of 25% or more of the assets of such 
party and its subsidiaries, taken as a whole or (iii) a tender offer or 
exchange offer for, or any other acquisition of, 10% or more of the 
outstanding voting securities of such party.

       SECTION 5.05   EMPLOYEE BENEFITS MATTERS.  Annex A hereto sets forth 
certain agreements among the parties hereto with respect to employee benefits 
matters and is incorporated herein by this reference

       SECTION 5.06   LETTERS OF ACCOUNTANTS.

            (a)   Socket shall use its reasonable best efforts to cause to be 
delivered to Cetronic "comfort" letters of Ernst & Young LLP, Socket's 
independent public accountants, dated and delivered on the Registration 
Statement Effective Date and as of the Closing Date, and addressed to 
Cetronic, in form and substance reasonably satisfactory to Cetronic and 
reasonably customary in scope and substance for letters delivered by 
independent public accountants in connection with transactions such as those 
contemplated by this Agreement.

            (b)   Cetronic shall use its reasonable best efforts to cause to 
be delivered to Socket "comfort" letters of Ohrlings Coopers & Lybrand AB, 
Cetronic's independent public accountants, dated and delivered the 
Registration Statement Effective Date and as of the Closing Date, and 
addressed to Socket, in form and substance reasonably satisfactory to Socket 
and reasonably customary in scope and substance for letters delivered by 
independent public accountants in connection with transactions such as those 
contemplated by this Agreement.

       SECTION 5.07   FURTHER ACTION; CONSENTS; FILINGS.

            (a)   Upon the terms and subject to the conditions hereof, each 
of the parties hereto shall use its best efforts to (i) take, or cause to be 
taken, all appropriate action, and do, or cause to be done, all things 
necessary, proper or advisable under applicable Law or otherwise to 
consummate and make effective the Transactions, (ii) obtain from Governmental 
Entities any consents, licenses, permits, waivers, approvals, authorizations 
or orders required to be obtained or made by Cetronic or Socket or any of 
their subsidiaries in connection with the authorization, execution and 
delivery of this Agreement and the consummation of the Transactions, (iii) 
make all necessary filings, and thereafter make any other submissions either 
required or deemed appropriate by each of the parties, with respect to this 
Agreement and the Transactions required under (A) the rules and regulations 
of the FSA, (B) the Securities Act, the Exchange Act and any other applicable 
federal or Blue Sky Laws, (C) the HSR Act, and (D) any other applicable Law.  
The parties hereto shall cooperate and consult with each other in connection 
with the making of all such filings, including by providing copies of all 
such documents to the nonfiling party and its advisors prior to filing, and 
none of the parties will file any such document if any of the other parties 
shall have reasonably objected to the filing of such document.  No party to 
this Agreement shall consent to any voluntary extension of any statutory 
deadline or waiting period or to any voluntary delay of the consummation of 
the Transactions at the behest of any Governmental Entity without the consent 
and agreement of the other parties to this Agreement, which consent shall not 
be unreasonably withheld or delayed.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 26


            (b)   Without limiting the generality of Section 5.07(a), each of 
Cetronic and Socket shall:

                  (i) take promptly any or all of the following actions to 
the extent necessary to obtain the approval of any Governmental Entity with 
jurisdiction over the enforcement of any applicable Laws regarding the 
legality of the Transactions: entering into negotiations, providing 
information, making proposals, entering into and performing agreements or 
submitting to judicial or administrative orders, or selling or otherwise 
disposing of, or holding separate (through the establishment of a trust or 
otherwise) particular assets or categories of assets, or businesses, of 
Cetronic, Socket or any of their affiliates; provided, however, neither 
Cetronic nor Socket shall be obligated to take any action that would have a 
Cetronic Material Adverse Effect or a Socket Material Adverse Effect, as the 
case may be, assuming for purposes of this proviso that the Transactions have 
been consummated;

                  (ii) use its best efforts to prevent the entry in a 
judicial or administrative proceeding brought under any Law by any Government 
Entity or any other party of any permanent or preliminary injunction or other 
order (an "Order") that would make consummation of the Transactions in 
accordance with the terms of this Agreement unlawful or that would prevent or 
delay such consummation, including, without limitation, taking the steps 
contemplated by Section 5.07(b)(i); and

                   (iii) take promptly, in the event that such an Order has 
been issued in such a proceeding, any and all steps, including, without 
limitation, the appeal thereof, the posting of a bond or the steps 
contemplated by Section 5.07(b)(i), necessary to vacate, modify or suspend 
such injunction or order so as to permit such consummation on a schedule as 
close as possible to that contemplated by this Agreement.

       SECTION 5.08   SOCKET ORGANIZATION.  Immediately prior to the Closing 
Time, Socket shall take action to cause the full Board of Directors of Socket 
at the Closing to consist of (A) two persons who are currently directors of 
Socket, (B) two persons who are currently directors of Cetronic, and (C) the 
Chief Executive Officer of Socket; provided, however, that if Socket has not 
hired a new Chief Executive Officer by the Closing Time, such Socket Board 
position shall remain vacant until such time as Socket hires a new Chief 
Executive Officer who is mutually agreeable to Socket and Cetronic.

       SECTION 5.09   PUBLIC ANNOUNCEMENTS.  Cetronic and Socket shall 
consult with each other before issuing any press release or otherwise making 
any public statements with respect to this Agreement or any Transaction and 
shall not issue any such press release or make any such public statement 
prior to such consultation, except to the extent required by applicable Law 
or the requirements of the NASD or the Pacific Stock Exchange ("PSE"), in 
which case the issuing party shall use its reasonable best efforts to consult 
with the other party before issuing any such release or making any such 
public statement.

       SECTION 5.10   STOCK EXCHANGE LISTINGS.  Socket shall use its best 
efforts to cause the shares of Socket Common Stock to be issued in the 
Transactions to be approved for listing on the OTC Bulletin Board or the 
Nasdaq SmallCap Market, as applicable, and the PSE, subject to official 
notice of issuance, prior to the Closing Date.  Following the Closing Date, 
Socket shall use its reasonable efforts to cause its Common Stock (or Swedish 
securities (i.e., SDS's) based on the Socket Common Stock) to be approved for 
listing on the SSE or similar Swedish exchange.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 27


       SECTION 5.11   CONVERTIBLE BRIDGE LOANS. 

            (a)   Concurrently with the execution of this Agreement, (i) 
Cetronic shall provide Socket with a six-month convertible bridge loan in the 
principal amount of $500,000, which loan shall be evidenced by a promissory 
note in the form attached hereto as EXHIBIT A (the "New Cetronic Note"); and 
(ii) the individuals and entities set forth on Schedule 5.11 hereof shall 
provide Socket with a six-month convertible bridge loan in the aggregate 
principal amount of $100,000, which loan shall be evidenced by a promissory 
note in the form attached hereto as Exhibit B.

            (b)   Prior to the earlier of their respective maturity dates or 
the Closing Time, (i) with respect to a prior convertible bridge loan 
provided by Cetronic to Socket in the principal amount of $500,000 (the 
"Prior Cetronic Note"), Cetronic shall, and with respect to prior convertible 
bridge loans provided by certain Cetronic stockholders, Cetronic shall use 
its best efforts to extend the maturity date of such bridge loans outstanding 
so that they become due on the same date as the six-month loan described in 
paragraph (i) hereof; and (ii) Socket shall use its best efforts to obtain up 
to an additional $400,000 in six-month convertible bridge loans on 
substantially the same terms as the six month loans described in paragraph 
(a)(ii) hereof.

       SECTION 5.12   CETRONIC INTELLECTUAL PROPERTY AGREEMENTS. Prior to the 
Closing Time, (a) the individuals and entities listed on Schedule 5.12(a) 
will enter into agreements (the "IP Agreements") with Cetronic confirming 
Cetronic's ownership of its intellectual property and confirming that such 
individual or entity has no rights in any Cetronic intellectual property; (b) 
the individuals and entities listed on Schedule 5.12(b) will enter into IP 
Agreements with Cetronic Norge A/S, a Norwegian corporation and wholly owned 
subsidiary of Cetronic ("Cetronic Norge"), confirming Cetronic Norge's 
ownership or rights to use intellectual property and confirming that such 
individual or entity have no rights in any Cetronic Norge intellectual 
property; and (c) the individuals and entities listed on Schedule 5.12(c) 
will enter into IP Agreements with Socket confirming Socket's ownership of 
its intellectual property and confirming that such individual or entity has 
no rights in any Socket intellectual property.

       SECTION 5.13   TERMINATION OF CETRONIC STOCKHOLDERS' AGREEMENT.  Prior 
to the Closing Time, the agreement between Cetronic and the holders of 
Cetronic Class A Shares, which provides for, among other things, a right of 
first refusal with respect to the sale of such shares, shall be terminated in 
accordance with its terms and shall be of no further force or effect.

       SECTION 5.14   CETRONIC RELATED-PARTY AGREEMENTS.  Prior to the 
Closing Time, Cetronic shall cause the agreements listed in Section 3.14 of 
the Cetronic Disclosure Schedule to be amended on terms mutually agreeable to 
Socket and the parties thereto.

       SECTION 5.15   CONVERSION OF CETRONIC CONVERTIBLE NOTES.  Prior to the 
initial Expiration Date of the Exchange Offer, Cetronic shall use its best 
efforts to cause the holders of the convertible promissory notes of Cetronic 
listed on Schedule 5.15 to convert all of the outstanding principal of such 
notes and any accrued interest thereon into Cetronic Shares in accordance 
with the terms thereof

       SECTION 5.16   REGISTRATION RIGHTS AGREEMENT.  Prior to the Closing 
Time, Socket and the persons listed on Schedule 5.16 shall have entered into 
a Registration Rights Agreement in a form to be mutually agreed upon by such 
persons pursuant to which, among other things, Socket shall agree to file a 
Registration Statement for the registration of the shares of Socket Common 
Stock to be owned by the persons listed on Schedule 5.16 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 28


following the Closing Date within ninety (90) days of the Closing Date and 
that Socket shall use its reasonable best efforts to cause such Registration 
Statement to be declared effective as soon as practicable thereafter and to 
remain effective for a period of two (2) years.

                                   ARTICLE VI

                         CONDITIONS TO THE TRANSACTIONS

       SECTION 6.01   CONDITIONS TO THE OBLIGATIONS OF EACH PARTY TO 
CONSUMMATE THE TRANSACTIONS.  The obligations of Cetronic and Socket to 
consummate the Transactions, or to permit the consummation of the 
Transactions, are subject to the satisfaction or, if permitted by applicable 
Law, waiver of the following conditions:

            (a)   the Registration Statement shall have been declared 
effective by the SEC under the Securities Act, and no stop order suspending 
the effectiveness of the Registration Statement shall have been issued by the 
SEC and no proceeding for that purpose shall have been initiated by the SEC;

            (b)   The Swedish language prospectus shall have been filed with 
the FSA, and no action shall have been taken by the FSA that might influence 
the Exchange Offer and no proceeding for that purpose shall have been 
initiated by the FSA;

            (c)   This Agreement and the Transactions shall have been 
approved and adopted by the requisite vote of the stockholders of Socket, and 
the amendment to Cetronic's Articles of Association involving the termination 
of all preemptive or similar rights of Cetronic stockholders shall have been 
approved by the requisite vote of the stockholders of Cetronic.

            (d)   no court of competent jurisdiction shall have issued or 
entered any Order which is then in effect and has the effect of making any of 
the Transactions illegal or otherwise prohibiting their consummation;

            (e)   all consents, approvals and authorizations required to be 
obtained to consummate the Transactions shall have been obtained from all 
Governmental Entities, except where the failure to obtain any such consents, 
approvals and authorizations would not result in a change in or effect on the 
business of Socket or Cetronic that is, or is reasonably likely to be, 
materially adverse to the business, assets (including intangible assets), 
liabilities (contingent or otherwise), condition (financial or otherwise) or 
results of operations of Socket, Cetronic and their respective subsidiaries, 
taken as a whole;

            (f)   the shares of Socket Common Stock to be issued pursuant to 
the Exchange Offer shall have been authorized for listing on the OTC Bulletin 
Board or the Nasdaq Small Cap Market, as applicable, subject to official 
notice of issuance, and shall have been authorized for listing on the PSE; and

            (g)   the Minimum Condition.

       SECTION 6.02   CONDITIONS TO THE OBLIGATIONS OF SOCKET.  The 
obligations of Socket to consummate the Transactions, or to permit the 
consummation of the Transactions, are subject to the satisfaction or, if 
permitted by applicable Law, waiver of the following further conditions:

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 29


            (a)   each of the representations and warranties of Cetronic 
contained in this Agreement shall be true and correct as of the Closing Date 
as though made on and as of the Closing Date, except for changes contemplated 
by this Agreement (including the Cetronic Disclosure Schedule) and except 
that those representations and warranties that address matters only as of a 
particular date which shall remain true and correct as of such date, with the 
same force and effect as if made on and as of the Closing Date, except where 
any such failure or failures to be so true and correct, in the aggregate, 
would not have a Cetronic Material Adverse Effect, and Socket shall have 
received a certificate of the Chairman, President or Chief Financial Officer 
of Cetronic and the Cetronic Stockholder Agent to such effect;

            (b)   Cetronic shall have performed or complied in all material 
respects with all agreements and covenants required by this Agreement to be 
performed or complied with by it or them on or prior to the Closing Date, and 
Socket shall have received a certificate of the Chairman, President or Chief 
Financial Officer of Cetronic to that effect;

            (c)   Socket shall have been furnished with evidence satisfactory 
to it that Cetronic has obtained the consents, approvals and waivers set 
forth in Schedule 6.02(c);

            (d)   Socket shall have received a legal opinion from 
Advokatfirman Fylgia, legal counsel to Cetronic, in a form that is customary 
for similar transactions and is reasonably satisfactory to Socket; and

            (e)   Socket shall have been furnished with evidence satisfactory 
to it that Cetronic has, as of the Closing Date, the Minimum Cash Balance 
Requirement, and, other than as contemplated by this Agreement or as set 
forth in Cetronic Disclosure Schedules, Cetronic has no agreement or 
commitment that would reduce its cash balances below the Minimum Cash Balance 
Requirement following the Closing Time, other than for agreements or 
commitments consented to in writing by Socket prior to such agreement or 
commitment, which consent shall not be unreasonably withheld.

       SECTION 6.03   CONDITIONS TO THE OBLIGATIONS OF CETRONIC.  The 
obligations of Cetronic to consummate the Transactions, or to permit the 
consummation of the Transactions, are subject to the satisfaction or, if 
permitted by applicable Law, waiver of the following further conditions:

            (a)   Each of the representations and warranties of Socket 
contained in this Agreement shall be true and correct as of the Closing Date, 
as though made on and as of the Closing Date, except for changes contemplated 
by this Agreement (including the Socket Disclosure Schedule) and except that 
those representations and warranties that address matters only as of a 
particular date (which shall remain true and correct as of such date) with 
the same force and effect as if made on and as of the Closing Date, except 
where any such failure or failures to be so true and correct, in the 
aggregate, would not have a Socket Material Adverse Effect, and Cetronic 
shall have received a certificate of the Chairman, President or Chief 
Financial Officer of Socket to such effect;

            (b)   Socket shall have performed or complied in all material 
respects with all agreements and covenants required by this Agreement to be 
performed or complied with by it on or prior to the Closing Date, and 
Cetronic shall have received a certificate of the Chairman, President or 
Chief Financial Officer of Socket to that effect;

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 30


            (c)   Cetronic shall have been furnished with evidence 
satisfactory to it that Socket has obtained the consents, approvals and 
waivers set forth in Schedule 6.03(c);

            (d)   Cetronic shall have received a legal opinion from Wilson 
Sonsini Goodrich & Rosati, legal counsel to Socket, in a form that is 
customary for similar transactions and is reasonably satisfactory to Cetronic;

            (e)   Two members of the Board of Directors of Socket shall have 
resigned, and the Board of Directors of Socket shall have taken appropriate 
action to elect two Cetronic designees to fill the vacancies resulting from 
such resignations to the Board of Directors of Socket, effective upon the 
Closing; and

            (f)   To the extent required under the agreements listed on 
Schedule 6.3(f), Socket shall have received the written consent, waiver or 
authorization of the parties to the agreements listed on Schedule 6.3(fl.

                                   ARTICLE VII

                        TERMINATION, AMENDMENT AND WAIVER

       SECTION 7.01   TERMINATION.  This Agreement may be terminated and the 
Exchange Offer may be abandoned at any time prior to the Closing, whether 
before or after approval and adoption of this Agreement by the Socket 
stockholders or the approval of the Preemptive Rights Waiver by the Cetronic 
stockholders, as follows:

            (a)   by mutual written consent duly authorized by the Board of 
Directors of each of Cetronic and Socket;

            (b)   by either Cetronic or Socket, if the Closing shall not have 
occurred on or before November 1, 1997 (the "Final Closing Date"); provided, 
however, that the right to terminate this Agreement under this Section 
7.01(b) shall not be available to the party whose willful failure to fulfill 
any obligation under this Agreement shall have been the cause of, or resulted 
in, the failure of the Closing to occur on or before such date;

            (c)   by either Cetronic or Socket, if any Order preventing the 
consummation of the Transactions shall have been entered by any court of 
competent jurisdiction and shall have become final and nonappealable;

            (d)   by Cetronic, if (i) the Board of Directors of Socket 
withdraws, modifies or changes its recommendation of this Agreement in a 
manner adverse to Cetronic or shall have resolved to do so, (ii) the Board of 
Directors of Socket shall have recommended to the stockholders of Socket a 
Competing Transaction or shall have resolved to do so, or (iii) a tender 
offer or exchange offer for 10% or more of the outstanding shares of capital 
stock of Socket is commenced, and the Board of Directors of Socket fails to 
recommend against acceptance of such tender offer or exchange offer by its 
stockholders (including by taking no position with respect to the acceptance 
of such tender offer or exchange offer by its stockholders);

            (e)   by Socket, if (i) the Board of Directors of Cetronic
withdraws, modifies or changes its recommendation of the Exchange Offer in a
manner adverse to Socket or shall have resolved to do so, (ii) the 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 31


Board of Directors of Cetronic shall have recommended to the stockholders of 
Cetronic a Competing Transaction or shall have resolved to do so, or (iii) a 
tender offer or exchange offer for 10% or more of the outstanding shares of 
capital stock of Cetronic is commenced (other than the Exchange Offer), and 
the Board of Directors of Cetronic fails to recommend against acceptance of 
such tender offer or exchange offer by its stockholders (including by taking 
no position with respect to the acceptance of such tender offer or exchange 
offer by its stockholders);

            (f)   by Cetronic or Socket if, (i) this Agreement shall fail to 
receive the requisite vote for adoption at the Socket Stockholders' Meeting 
or any adjournment or postponement thereof, (ii) the Exchange Offer expires 
without the Minimum Condition having been met or any Cetronic Shares having 
been accepted for payment or (iii) the Preemptive Rights Waiver shall fail to 
receive the requisite vote for approval at the Cetronic Stockholders' Meeting 
or any postponement or adjournment thereof;

            (g)   by Cetronic, upon a breach of any material representation, 
warranty, covenant or agreement on the part of Socket set forth in this 
Agreement, or if any representation or warranty of Socket shall have become 
untrue, in either case such that the conditions set forth in Section 6.03 
would not be satisfied ("Terminating Socket Breach"); provided, however, 
that, if such Terminating Socket Breach is curable by Socket through the 
exercise of its best efforts and for so long as Socket continues to exercise 
such best efforts, Cetronic may not terminate this Agreement under this 
Section 7.01(g);

            (h)   by Socket, upon breach of any material representation, 
warranty, covenant or agreement on the part of Cetronic set forth in this 
Agreement, or if any representation or warranty of Cetronic shall have become 
untrue, in either case such that the conditions set forth in Section 6.02 
would not be satisfied ("Terminating Cetronic Breach"); provided, however, 
that, if such Terminating Cetronic Breach is curable by Cetronic through best 
efforts and for so long as Cetronic continues to exercise such best efforts, 
Socket may not terminate this Agreement under this Section 7.01(h);

                  (i) by Cetronic, if the Board of Directors of Cetronic 
shall, following receipt of advice of independent legal counsel (who may be 
Cetronic's regularly engaged independent legal counsel) that failure to so 
terminate would cause the Board of Directors of Cetronic to breach its 
fiduciary duties under applicable Laws, have withdrawn, modified or changed 
its recommendation of the approval of the Exchange Offer in a manner adverse 
to Socket and, on or prior to such date, any person (other than Socket) shall 
have made a public announcement or otherwise communicated to Cetronic and its 
stockholders with respect to a Competing Transaction; provided, however, that 
Cetronic may not terminate this Agreement pursuant to this subsection (i) 
until three business days have elapsed following delivery to Socket of 
written notice of such determination of Cetronic (which written notice will 
inform Socket of material terms and conditions of the Competing Transaction); 
provided, further, however, that such termination under this Section 7.01(i) 
shall not be effective until Cetronic has converted the New Cetronic Note and 
the Prior Cetronic Note to Socket as required pursuant to Section 7.05(c); or

            (j)   by Socket, if the Board of Directors of Socket shall, 
following receipt of advice of independent legal counsel (who may be Socket's 
regularly engaged independent legal counsel) that failure to so terminate 
would cause the Board of Directors of Socket to breach its fiduciary duties 
under applicable Laws, have withdrawn, modified or changed its recommendation 
of the adoption of this Agreement in a manner adverse to Cetronic and, on or 
prior to such date, any person (other than Cetronic) shall have made a public 
announcement or otherwise communicated to Socket and its stockholders with 
respect to a Competing Transaction; provided, 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 32


however, that Socket may not terminate this Agreement pursuant to this 
subsection (j) until three business days have elapsed following delivery to 
Cetronic of written notice of such determination of Socket (which written 
notice will inform Cetronic of the material terms and conditions of the 
Competing Transaction); provided, further, however, that such termination 
under this Section 7.01(j) shall not be effective until Socket has delivered 
to Cetronic the shares required to be delivered pursuant to Section 7.05(b).

       SECTION 7.02   EFFECT OF TERMINATION.  In the event of termination of 
this Agreement pursuant to Section 7.01, this Agreement shall forthwith 
become void, there shall be no liability under this Agreement on the part of 
Cetronic, or Socket or any of their respective officers or directors, and all 
rights and obligations of each party hereto shall cease, subject to the 
remedies of the parties set forth in Sections 7.05(b), (c), (d) and (e); 
provided, however, that nothing herein shall relieve any party from liability 
for the wilful breach of any of its representations and warranties or the 
breach of any of its covenants or agreements set forth in this Agreement.

       SECTION 7.03   AMENDMENT.  This Agreement may be amended by the 
parties hereto by action taken by or on behalf of their respective Boards of 
Directors at any time prior to the Closing Time.  This Agreement may not be 
amended except by an instrument in writing signed by the parties hereto.

       SECTION 7.04   WAIVER.  At any time prior to the Closing Time, any 
party hereto may (a) extend the time for the performance of any obligation or 
other act of any other party hereto, (b) waive any inaccuracy in the 
representations and warranties contained herein or in any document delivered 
pursuant hereto, and (c) waive compliance with any agreement or condition 
contained herein.  Any waiver of a condition set forth in Section 6.01, or 
any determination that such a condition has been satisfied, will be effective 
only if made in writing by each of Socket and Cetronic and, unless otherwise 
specified in such writing, shall thereafter operate as a waiver (or 
satisfaction) of such condition for any and all purposes of this Agreement.  
Any such extension or waiver shall be valid if set forth in an instrument in 
writing signed by the party or parties to be bound thereby.

       SECTION 7.05   FEES AND EXPENSES. 

            (a)   Except as set forth in this Section 7.05, all Expenses (as 
defined below) incurred in connection with this Agreement and the 
Transactions shall be paid by the party incurring such expenses, whether or 
not the Exchange Offer is consummated, except that Cetronic and Socket each 
shall pay one-half of all Expenses relating to printing, filing and mailing 
the Registration Statement and the Disclosure Documents and all SEC and other 
regulatory filing fees incurred in connection with the Registration Statement 
and the Disclosure Documents.  "Expenses" as used in this Agreement shall 
consist of all out-of-pocket expenses (including, without limitation, all 
fees and expenses of counsel, accountants, investment bankers, experts and 
consultants to a party hereto and its affiliates) incurred by a party or on 
its behalf in connection with or related to the authorization, preparation, 
negotiation, execution and performance of this Agreement, the preparation, 
printing, filing and mailing of the Registration Statement and the Disclosure 
Documents, the solicitation of stockholder approvals and all other matters 
related to the closing of the Transactions.

            (b)   Socket agrees that, if (A) Socket shall terminate this 
Agreement pursuant to Section 7.01(j); (B) Cetronic shall terminate this 
Agreement pursuant to Section 7.01(d) and at the time of such termination, 
any person shall have made a public announcement or otherwise communicated 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 33


to Socket and its stockholders with respect to a Competing Transaction with 
respect to Socket; or (C) (i) Cetronic shall terminate this Agreement 
pursuant to Section 7.01(f)(i) due to the failure of the Socket Stockholder 
Approval Condition, (ii) at the time of such failure, any person shall have 
made a public announcement or otherwise communicated to Socket and its 
stockholders with respect to a Competing Transaction with respect to Socket 
and (iii) within six months thereafter, such Competing Transaction shall be 
consummated, in each case resulting in a Change of Control (as defined below) 
of Socket, then promptly after such termination, or (in the case of clause 
(C)) promptly after the consummation of such Competing Transaction, Socket 
shall issue to Cetronic 500,000 shares of Socket Common Stock.  For purposes 
of this Agreement, the term "Change of Control," with respect to any 
particular person, shall mean the occurrence of any of the following events 
with respect to such person: (i) there shall be consummated (A) any merger, 
consolidation or combination (any, a "Combination") involving such person in 
which such person is not the continuing or surviving corporation, or pursuant 
to which shares of such person's voting stock would be converted in whole or 
in part into cash, other securities or other property, other than a 
Combination involving such person in which the holders of such person's 
voting stock immediately prior to the Combination have substantially the same 
proportionate ownership of voting stock of the surviving corporation 
immediately after the Combination, or (B) any sale, lease, exchange or 
transfer (in one transaction or a series of related transactions) of all or 
substantially all of the assets of such person, or (ii)any person, other than 
such person or a subsidiary thereof or any employee benefit plan sponsored by 
such person or a subsidiary thereof or a corporation owned, directly or 
indirectly, by the stockholders of such person in substantially the same 
proportions in their ownership of stock of such person, shall become the 
beneficial owner (within the meaning of Rule 13d-3 under the Exchange Act) of 
securities of such person representing 50% or more of the combined voting 
power of then outstanding securities ordinarily (and apart from rights 
accruing in special circumstances) having the right to vote in the election 
of directors, as a result of a tender or exchange offer, open market 
purchases, privately negotiated purchases or otherwise.

            (c)   Cetronic agrees that, if (A) Cetronic shall terminate this 
Agreement pursuant to Section 7.01(i); (B) Socket shall terminate this 
Agreement pursuant to Section 7.01(e) and at the time of such termination, 
any person shall have made a public announcement or otherwise communicated to 
Cetronic and its stockholders with respect to a Competing Transaction with 
respect to Cetronic; or (C) (i) Socket shall terminate this Agreement 
pursuant to Section 7.01(f)(ii) or 7.01(f)(iii) due to the fact that the 
Exchange Offer has expired without any Cetronic Shares having been accepted 
for payment or the failure of the Preemptive Rights Waiver to receive the 
requisite approval at the Cetronic Stockholders' Meeting, (ii) at the time of 
such failure, any person shall have made a public announcement or otherwise 
communicated to Cetronic and its stockholders with respect to a Competing 
Transaction with respect to Cetronic and (iii) within six months thereafter, 
such Competing Transaction shall be consummated, in each case resulting in a 
Change of Control of Cetronic, then promptly after such termination, or (in 
the case of clause (C)) promptly after the consummation of such Competing 
Transaction, Cetronic shall convert into shares of Socket Common Stock the 
New Cetronic Note and the Prior Cetronic Note, as amended, referred to in 
Section 5.11 hereof, plus accrued interest thereon in accordance with the 
terms thereof.

            (d)   (i) Socket agrees that if this Agreement is terminated by 
either party pursuant to Section 7.01 (f)(i) as a result of the failure to 
obtain the requisite vote for adoption of this Agreement at the Socket 
Stockholders' Meeting or any adjournment or postponement thereof, then Socket 
shall reimburse Cetronic for all its Expenses (upon receipt of reasonable 
documentation in respect thereof) up to an aggregate amount of $350,000; and 
(ii) Cetronic agrees that if this Agreement is terminated by either party 
pursuant to Section 7.01 (f)(ii) or (iii) as a result of the Exchange Offer 
expiring without any Cetronic Shares having been accepted for payment or the 
failure of the Preemptive Rights Waiver to receive the requisite vote for 
approval at the Cetronic Stockholders' Meeting or any postponement or 
adjournment thereof, then Cetronic shall reimburse Socket for all of its 
Expenses (upon receipt of reasonable documentation in respect thereof) up to 
an aggregate amount of $350,000.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 34


            (e)   Each of Cetronic and Socket agrees that the provisions of 
Sections 7.05(b), (c) and (d) shall be the sole and exclusive remedies of the 
parties upon a termination of this Agreement pursuant to Section 7.01(d), 
(e), (f), (i) or (j), as the case may be, and such remedies shall be limited 
to the provisions stipulated in Sections 7.05(b), (c) and (d); provided, 
however, that nothing herein shall relieve any party from liability for the 
wilful breach of any of its representations and warranties or the breach of 
any of its covenants or agreements set forth in this Agreement.

            (f)   Any note conversion or share issuance required to be made 
pursuant to Section 7.05(b) or (c) shall be taken by the party required to 
take such action as soon as practicable after delivery to the other party of 
notice of demand for such note conversion or share issuance.  Any payment 
required to be made pursuant to Section 7.05(d) shall be made to the party 
entitled to receive such payment not later than five business days after 
delivery to the other party of notice of demand for payment and shall be made 
by wire transfer of immediately available funds to an account designated by 
the party entitled to receive payment in the notice of demand for payment 
delivered pursuant to this Section 7.05(f).

            (g)   In the event that Cetronic or Socket, as the case may be, 
shall fail to pay any Expenses when due, the amount of any such Expenses 
shall be increased to include the costs and expenses actually incurred or 
accrued by the other (including, without limitation, fees and expenses of 
counsel) in connection with the collection under and enforcement of this 
Section 7.05, together with interest on such unpaid Expenses, commencing on 
the date that such Expenses became due, at a rate equal to the rate of 
interest publicly announced by Citibank, N.A., from time to time, in The City 
of New York, as such bank's Prime Rate plus 1.00%.

                                  ARTICLE VIII

                               GENERAL PROVISIONS

       SECTION 8.01   NO SURVIVAL OF REPRESENTATIONS.  All representations, 
warranties and covenants of the parties contained in this Agreement will 
remain operative and in full force and effect, regardless of any 
investigation made by or on behalf of the parties to this Agreement, until 
the earlier of the termination of this Agreement or the Closing Date, 
whereupon such representations, warranties and covenants will expire (except 
for covenants that by their terms survive for a longer period).

       SECTION 8.02   NOTICES.  All notices, requests, claims, demands and 
other communications hereunder shall be in writing and shall be given (and 
shall be deemed to have been duly given upon receipt) by delivery in person, 
by telecopy and facsimile or by registered or certified mail (postage 
prepaid, return receipt requested) to the respective parties at the following 
addresses (or at such other address for a party as shall be specified in a 
notice given in accordance with this Section 9.02):

if to Cetronic:       Cetronic Aktiebolag
                      Box 153
                      S-864 22 MATFORS 
                      SWEDEN
                      Attention: Kurt Sjoblom
                      Telecopier: 46 60 67 13 09

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 35


with a copy to:       Tomlinson Zisko Morosoli & Maser LLP
                      200 Page Mill Road, Second Floor 
                      Palo Alto, CA 94306 
                      Attention: Richard Allan Horning 
                      Telecopier: (415) 324-1808 

and a copy to:        Advokatfirman Fylgia
                      P.O. Box 55555 
                      Linnegatan 2 S-102 
                      04 Stockholm 
                      SWEDEN 
                      Attention: Jan Ramkvist, Esq. 
                      Telecopier: +46-8442 53 15 

if to Socket:         Socket Communications, Inc. 
                      37400 Central Court 
                      Newark, CA 94560 
                      Attention: Chief Financial Officer 
                      Telecopier: (510) 744-2728 

with copies to:       Wilson Sonsini Goodrich & Rosati 
                      650 Page Mill Road 
                      Palo Alto, California 94304 
                      Attention: Barry E. Taylor, Esq. 
                      Telecopier: (415) 493-6811 

and a copy to:        Lagerlof & Leman Advokatbyra
                      P.O. Box 5402 S-114 
                      84 Stockholm
                      SWEDEN 
                      Attention: Peter Traung, Esq. 
                      Telecopier: +46-8 667 68 83


       SECTION 8.03   CERTAIN DEFINITIONS.  For purposes of this Agreement, 
the term:

            (a)   "affiliate" of a specified person means a person who 
directly or indirectly through one or more intermediaries controls, is 
controlled by, or is under common control with, such specified person;

            (b)   "beneficial owner" with respect to any shares of capital 
stock means a person who shall be deemed to be the beneficial owner of such 
shares (i) which such person or any of its affiliates or associates (as such 
term is defined in Rule 12b-2 promulgated under the Exchange Act) 
beneficially owns, directly or indirectly, (ii) which such person or any of 
its affiliates or associates has, directly or indirectly, (A) the right to 
acquire (whether such right is exercisable immediately or subject only to the 
passage of time), pursuant to any agreement, arrangement or understanding or 
upon the exercise of consideration rights, exchange rights, warrants or 
options, or otherwise, or (B) the right to vote pursuant to any agreement, 
arrangement or understanding, or 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 36


(iii) which are beneficially owned, directly or indirectly, by any other 
persons with whom such person or any of its affiliates or associates or 
person with whom such person or any of its affiliates or associates has any 
agreement, arrangement or understanding for the purpose of acquiring, 
holding, voting or disposing of any shares of capital stock;

            (c)   "business day" means any day on which the principal offices 
of the SEC in Washington, D.C. are open to accept filings, or, in the case of 
determining a date when any payment is due, any day on which banks are 
generally open for commercial transactions in The City of New York, USA or in 
Stockholm, Sweden;

            (d)   "control" (including the terms "controlled by" and "under 
common control with") means the possession, directly or indirectly or as 
trustee or executor, of the power to direct or cause the direction of the 
management and policies of a person, whether through the ownership of voting 
securities, as trustee or executor, by contract or credit arrangement or 
otherwise:

            (e)   "knowledge" means, with respect to any matter in question, 
that the executive officers of Cetronic or Socket, as the case may be, (i) 
have knowledge of such matter, or (ii) after due investigation, should have 
known of such matter;

            (f)   "Noon Buying Rate" means the noon buying rate in The City 
of New York for cable transfers in Swedish kronor as certified for customs 
purposes by the Federal Reserve Bank of New York;

            (g)   "person" means an individual, corporation, company, limited 
liability company, partnership, limited partnership, syndicate, person 
(including, without limitation, a "person" as defined in Section 13(d)(3) of 
the Exchange Act), trust, association or entity or government, political 
subdivision, agency or instrumentality of a government; and

            (h)   "subsidiary" or "subsidiaries" of any person means any 
corporation, limited liability company, partnership, joint venture or other 
legal entity of which such person (either alone or through or together with 
any other subsidiary) owns, directly or indirectly, more than 50% of the 
stock or other equity interests, the holders of which are generally entitled 
to vote for the election of the board of directors or other governing body of 
such corporation or other legal entity.

       SECTION 8.04   SEVERABILITY.  If any term or other provision of this 
Agreement is invalid, illegal or incapable of being enforced by any rule of 
Law or public policy, all other conditions and provisions of this Agreement 
shall nevertheless remain in full force and effect so long as the economic or 
legal substance of the Transactions is not affected in any manner materially 
adverse to any party.  Upon such determination that any term or other 
provision is invalid, illegal or incapable of being enforced, the parties 
hereto shall negotiate in good faith to modify this Agreement so as to effect 
the original intent of the parties as closely as possible in a mutually 
acceptable manner in order that the Transactions be consummated as originally 
contemplated to the fullest extent possible.

       SECTION 8.05   ASSIGNMENT; BINDING EFFECT; BENEFIT.  Neither this 
Agreement nor any of the rights, interests or obligations hereunder shall be 
assigned by any of the parties hereto (whether by operation of Law or 
otherwise) without the prior written consent of the other parties.  Subject 
to the preceding sentence, this Agreement shall be binding upon and shall 
inure to the benefit of the parties hereto and their respective successors 
and assigns. Notwithstanding anything contained in this Agreement to the 
contrary, nothing in this Agreement, 

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 37


expressed or implied, is intended to confer on any person other than the 
parties hereto or their respective successors and assigns any rights, 
remedies, obligations or liabilities under or by reason of this Agreement.

       SECTION 8.06   INCORPORATION OF EXHIBITS.  The Cetronic Disclosure 
Schedule, the Socket Disclosure Schedule, Annex A and all Exhibits attached 
hereto and referred to herein are hereby incorporated herein and made a part 
of this Agreement for all purposes as if fully set forth herein.

       SECTION 8.07   GOVERNING LAW.  This Agreement shall be governed by, 
and construed in accordance with, the laws of the State of California without 
regard to the conflicts of law provisions of the State of California or of 
any other state or country except that the fiduciary duties of the directors 
of Socket and Cetronic shall be governed under the laws of the jurisdiction 
of their respective organizations.

       SECTION 8.08   ARBITRATION.  Except as otherwise provided herein, all 
disputes, controversies, demands, or claims arising out of or relating to 
this Agreement, to the transactions contemplated by this Agreement, or to the 
formation, interpretation, performance, breach or termination thereof, which 
cannot be settled by direct negotiation between the parties, shall be finally 
settled and determined by arbitration administered by the International 
Chamber of Commerce (the "ICC") under its then current Rules of Conciliation 
and Arbitration (the "ICC Rules"). The written award of the arbitrators shall 
be final and binding upon the parties, and judgment on or enforcement of the 
award so rendered may be sought, had or entered in any court having 
jurisdiction.

            (a)   INITIATION OF ARBITRATION.  Any party may initiate 
arbitration by filing a written request for arbitration with the Secretariat 
of the ICC.  A copy of the request shall be furnished to all other parties in 
accordance with the provisions of the ICC Rules and Section 8.02 Notices.

            (b)   APPOINTMENT OF ARBITRATORS.  Each party shall appoint an 
arbitrator, and after consultation with the parties the ICC shall appoint a 
third arbitrator.  Each arbitrator so appointed shall have an international 
reputation as being experienced in the legal and technical matters related to 
the dispute.

            (c)   LOCATION OF THE ARBITRATION.  The seat of arbitration shall 
be Stockholm, Sweden, if the request for arbitration is first made by Socket, 
or Palo Alto, California, if the request for arbitration is first made by 
Cetronic. The arbitrators may hold hearings at such other locations as the 
arbitrators shall determine, after consultation with the parties.

            (d)   LANGUAGE OF ARBITRATION.  The arbitral proceedings and all 
pleadings and written evidence shall be in the English language.  Any written 
evidence originally in a language other than English shall be submitted in 
English translation accompanied by the original or true copy thereof.

            (e)   TERMS OF REFERENCE.  In addition to those matters required 
by the ICC Rules to be included in the Terms of Reference, the arbitrators 
shall, after consultation with the parties, include within the Terms of 
Reference appropriate provisions which:

                  (i)    require the disclosure of all exhibits expected to 
be used by the parties at the arbitration, and the exchange of complete 
copies of all such exhibits in advance of the arbitration;

                  (ii)   determine the dates for the exchange of said written 
disclosures and copies of said exhibits;

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 38


                  (iii)  require the written disclosure of the identity of 
all witnesses whom the parties expect to call at the arbitration;

                  (iv)   determine the dates for the exchange of the written 
disclosures of the identity of witnesses which the parties expect to call at 
the arbitration;

                  (v)    determine the dates for the exchange of sworn 
narrative statements containing the testimony of all witnesses whom the 
parties expect to call at the arbitration;

                  (vi)   require that the sworn narrative testimony of 
witnesses be submitted in substitution for the direct examination of the 
witness, and that all witnesses whose sworn testimony is submitted for 
consideration by the arbitrators must present him or herself for cross 
examination at the time and place of the arbitration hearing, unless some 
other procedure providing the parties with a full and complete opportunity 
for cross-examination has been established and provided by the arbitrators, 
the parties and the witness:

                  (vii)  prohibit, except upon a showing of good cause, or 
for purposes of rebuttal, the receipt into evidence of any exhibit not 
disclosed by the parties, nor shall the arbitrators permit a party to present 
the testimony of any witness whose identity and testimony was not exchanged 
prior to the arbitration; and

                  (viii) permit discovery as reasonable and necessary for the 
orderly preparation of the dispute for hearing and determination of the 
dispute (said discovery may include requests for production of documents and 
depositions of witnesses who cannot be summoned to the arbitration or are 
otherwise unavailable to attend the arbitration).

            (f)   LIMITATION ON REMEDIES.  The arbitrators are precluded from 
awarding punitive or exemplary damages, and may not award any indirect, 
special, incidental or consequential damages except upon a showing of bad 
faith.  In no event shall the arbitrators have the powers of an amiable 
compositeur.

            (g)   RESORT TO THE COURTS.  Nothing in this Agreement prohibits 
any party from seeking interim or conservatory relief in any court of 
competent jurisdiction; PROVIDED, HOWEVER that neither the filing of an 
application for a temporary restraining order, preliminary injunction, or 
other interim or conservatory relief, as necessary, nor the granting of such 
relief, shall be deemed to be a waiver of the obligation of the party to have 
the dispute heard and determined solely and exclusively by arbitration.

            (h)   SURVIVAL.  The rights and obligations of the parties as 
described herein shall survive the termination, expiration, non-renewal, or 
rescission of the Agreement between the parties.

       SECTION 8.09   HEADINGS.  The descriptive headings contained in this 
Agreement are included for convenience of reference only and shall not affect 
in any way the meaning or interpretation of this Agreement.

       SECTION 8.10   COUNTERPARTS.  This Agreement may be executed and 
delivered (including by facsimile transmission) in one or more counterparts, 
and by the different parties hereto in separate counterparts, each of which 
when executed and delivered shall be deemed to be an original but all of 
which taken together shall constitute one and the same agreement.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 39


       SECTION 8.11   ENTIRE AGREEMENT.  This Agreement (including Annex A, 
the Exhibits, the Cetronic Disclosure Schedule, the Socket Disclosure 
Schedule and the Schedules hereto) and any Confidentiality Agreement between 
Socket and Cetronic constitute the entire agreement among the parties with 
respect to the subject matter hereof and supersede all prior agreements and 
understandings among the parties with respect thereto.  No addition to or 
modification of any provision of this Agreement shall be binding upon any 
party hereto unless made in writing and signed by all parties hereto.

<PAGE>

Combination Agreement By and Between
Socket Communications, Inc. and
Cetronic Aktiebolag [Publ]
Dated as of June 12, 1997
Page 40


       IN WITNESS WHEREOF, Socket and Cetronic have caused this Agreement to 
be executed as of the date first written above by their respective officers 
thereunto duly authorized.

                                   "SOCKET"

                                   SOCKET COMMUNICATIONS. INC.


                                   By: /s/ Charlie Bass
                                       -----------------------------------
                                   Name:  Charlie Bass
                                   Title: Chairman of the Board and
                                          Acting Chief Executive Officer


Attest by: /s/ David W. Dunlap     
           --------------------------
Name:  David W. Dunlap
Title: Chief Financial Officer
       and Corporate Secretary


                                   "CETRONIC"

                                   CETRONIC AKTIEBOLAG [PUBL]


                                   By: /s/ Kurt Sjoblom
                                       -----------------------------------
                                   Name:  Kurt Sjoblom
                                   Title: 


Attest by: /s/ Gunnar Dahl         
           --------------------------
Name:  Gunnar Dahl
Title: Operation Manager



<PAGE>

                                                                       EXHIBIT C


THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH A
VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF.  THE SECURITIES
MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION AND
QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIC LIMITED CIRCUMSTANCES, AN
OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY COUNSEL FOR THE COMPANY, THAT
SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.


                           SOCKET COMMUNICATIONS, INC.

                SUBORDINATED SECURED CONVERTIBLE PROMISSORY NOTE


$500,000                                                      Newark, California
                                                                January 29, 1997

     SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), for
value received, hereby promises to pay to the order of Cetronic AB or holder
("HOLDER") in lawful money of the United States at the address of Holder set
forth below, the principal amount of Five Hundred Thousand Dollars ($500,000),
together with simple interest at the rate of eight percent (8%) per annum
(calculated on the basis of actual days elapsed and a year of 365 days). 
Subject to the following sentence, accrued interest shall be payable in cash
only at the time the Company pays any portion of the principal amount of this
Note.  If this Note is converted pursuant to Section 4 hereof, accrued interest
may be converted as set forth therein; any accrued interest that is not so
converted shall be payable in cash.

     The following is a statement of the rights of Holder and the conditions to
which this Note is subject, and to which the Holder hereof, by the acceptance of
this Note, agrees.  THE OBLIGATIONS DUE UNDER THIS NOTE ARE SECURED BY A
SECURITY AGREEMENT (THE "SECURITY AGREEMENT") DATED OF EVEN DATE HEREWITH AND
EXECUTED BY COMPANY IN FAVOR OF HOLDER.  ADDITIONAL RIGHTS OF HOLDER ARE SET
FORTH IN THE SECURITY AGREEMENT.

1.   PAYMENTS; PREPAYMENTS.

     (a)  All principal, interest and other amounts due hereunder shall be due
and payable on the earlier of (i) July 29, 1997 (the "MATURITY DATE") and
(ii) the day on which this Note becomes immediately due and payable pursuant to
Section 10 hereof.

     (b)  This Note may be prepaid, in whole or in part, from time to time ten
(10) business days after Holder receives written notice of such prepayment from
the Company; Holder shall then have until the end of such ten (10) business day
period to notify the Company in writing that it wishes to convert all or part of
the outstanding principal and accrued interest under this Note into Common Stock
pursuant to Section 4 below.  Prepayments shall be (i) reduced by any amounts
that Holder desires to so convert into Common Stock and then (ii) applied first
to outstanding interest, and then to principal.

     (c)  Upon payment in full of all principal and interest payable hereunder,
this Note shall be surrendered to Company for cancellation.


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 2



2.   SUBORDINATION.

     (a)  "Senior Indebtedness" means the principal of and premium, if any, and
interest on indebtedness of the Company incurred pursuant to the Promissory Note
and Loan Agreement, each dated as of July 5, 1995, between the Company and
CivicBank of Commerce.  The Company agrees and the holder of this Note, by
acceptance thereof, agrees, expressly for the benefit of the holder of the
Senior Indebtedness, that, except as otherwise provided herein, upon (i) an
event of default under the Senior Indebtedness, or (ii) any dissolution, winding
up, or liquidation of the company, whether or not in bankruptcy, insolvency or
receivership proceedings, the Company shall not pay, and the holder of such Note
shall not be entitled to receive, any amount in respect of the principal and
interest of such Note unless and until the Senior Indebtedness shall have been
paid or otherwise discharged.  Upon (1) an event of default under the Senior
Indebtedness, or (2) any dissolution, winding up or liquidation of the Company,
any payment or distribution of assets of the Company, which the holder of this
Note would be entitled to receive but for the provisions hereof, shall be paid
by the liquidating trustee or agent or other person making such payment or
distribution directly to the holder of the Senior Indebtedness ratably according
to the aggregate amounts remaining unpaid on the Senior Indebtedness after
giving effect to any concurrent payment or distribution to the holder of the
Senior Indebtedness.  Subject to the payment in full of the Senior Indebtedness
and until this Note is paid in full, the holder of this Note shall be subrogated
to the rights of the holder of the Senior Indebtedness (to the extent of
payments or distribution s previously made to the holder of the Senior
Indebtedness pursuant to this Section 2(a)) to receive payments or distributions
of assets of the Company applicable to the Senior Indebtedness.

     (b)  This Section 2 is not intended to impair, as between the Company, its
creditors (other than the holder of the Senior Indebtedness) and the holder of
this Note, the unconditional and absolute obligation of the Company to pay the
principal of and interest on the Note or affect the relative rights of the
holder of this Note and the other creditors of the Company, other than the
holder of the Senior Indebtedness.  Nothing in this Note shall prevent the
holder of this Note from exercising all remedies otherwise permitted by
applicable law upon default under the Note, subject to the rights, if any, of
the holder of the Senior Indebtedness in respect to cash, property or securities
of the Company received upon the exercise of any such remedy.

     (c)  Notwithstanding anything to the contrary herein, the holder of this
Note shall have the first priority security interest set forth in the Security
Agreement, and the subordination provisions of this Section 2 shall not apply to
the Collateral, as defined in the Security Agreement, or any proceeds from the
sale or other disposition thereof.

3.   EVENTS OF DEFAULT.  The occurrence of any of the following shall constitute
an "Event of Default" under this Note:

     (a)  The Company's failure to pay (i) when due any principal payment on the
due date hereunder of (ii) any interest or other payment required under the
terms of this Note on the date due, and failure to make such payment within five
(5) business days of Company's receipt of Holder's written notice to Company of
such failure to pay;

     (b)  Any representation or warranty made by the Company in section 3 of the
Security Agreement shall be false, incorrect or misleading in any material
respect when made; or


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 3



     (c)  The Company shall fail to perform any covenant set forth in section 4
of the Security Agreement.

4.   CONVERSION.

     (a)  In lieu of receiving cash payment for principal amounts and accrued
interest due under this Note, Holder shall have the right to convert outstanding
principal and accrued interest under this Note into Common Stock of the Company
at a conversion price per share equal to $1.00 (the "CONVERSION PRICE") at any
time on or prior to the Maturity Date.

     (b)  In addition to the conversion right provided in Section 4(a) above,
upon an Event of Default, in lieu of receiving cash payment for principal
amounts and accrued interest due under this Note, Holder shall have the right to
convert outstanding principal and accrued interest under this Note into Common
Stock of the Company at a conversion price per share equal to the lower of
(i) the Conversion Price or (ii) 65% of the average closing price of the
Company's Common Stock on the OTC Bulletin Board or Nasdaq SmallCap Market, as
applicable, for the five (5) business days prior to the date of the Event of
Default.

     (c)  Holder may exercise its conversion right by providing written notice
to the Company of Holder's intention to exercise its conversion right and the
amount of principal and accrued interest that it wishes to convert (the
"CONVERSION AMOUNT") at least ten (10) days prior to the date on which it wishes
to convert (the "CONVERSION DATE") (unless such notice is given pursuant to the
terms of Section 1(b) above, in which event notice shall comply with the terms
thereof).  No fractional shares of Common Stock shall be issued upon conversion
of this Note.  Promptly after the conversion of this Note, the Holder shall
surrender this Note, duly endorsed, at the principal office of Company.  At its
expense, Company shall, as soon as practicable thereafter (or as otherwise noted
in the provisions above), issue and deliver to such Holder at such principal
office a certificate or certificates for the number of shares of such Common
Stock to which the Holder shall be entitled upon such conversion (bearing such
legends as are required by applicable state and federal securities laws in the
opinion of counsel to Company).  In addition, unless this Note has been fully
converted, a new Note representing the principal amount that shall not have been
converted into Common Stock shall also be issued to Holder as soon as possible
thereafter.  Upon conversion of this Note in full, Company shall be forever
released from all its obligations and liabilities under this Note including
principal, interest and any other amounts due and owing pursuant hereto.  Any
notice from the Holder of an election to convert by the Company shall be
irrevocable.

     (d)  If at any time the number of authorized but unissued shares of Common
Stock shall not be sufficient to effect the conversion of the entire outstanding
principal amount and accrued interest under this Note, Company will use its best
efforts to take such corporate action as may be necessary, in the opinion of its
counsel, to increase its authorized but unissued shares of Common Stock to such
number of shares as shall be sufficient for such purposes.

5.   REGISTRATION RIGHT.

     (a)  Following the Maturity Date, and within a reasonable amount of time
following the conversion by Holder of any outstanding principal and accrued
interest under this Note into Common Stock of the Company, the Company will use
reasonable efforts to (i) file a registration statement under the Securities Act
of 1933, as amended (the "SECURITIES ACT") registering such shares for resale to
the public, (ii) 


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 4



have such registration statement declared effective by the Securities and 
Exchange Commission, (iii) register and qualify the securities covered by 
such registration statement under the Blue Sky laws of such jurisdictions as 
shall be reasonably requested by the Holder (provided that the Company shall 
not be required in connection therewith or as a condition thereto to qualify 
to do business or to file a general consent to service of process in any such 
states or jurisdictions, unless the Company is already subject to service in 
such jurisdiction and except as may be required by the Securities Act), (iv) 
cause all securities registered pursuant hereunder to be listed on each 
securities exchange on which similar securities issued by the Company are 
then listed, and (v) file updates to such registration statement as necessary 
to keep it effective until the date that all remaining such shares may be 
sold to the public without registration within a period of 90 days; PROVIDED 
THAT, the Company may suspend such registration for up to two periods of not 
more than 90 days each in any 12-month period if necessary (x) to enable the 
Company to update the registration statement or (y) to undertake another sale 
of securities.

     (b)  All Registration Expenses (as hereafter defined) incurred in
connection with any registration pursuant to this Section 5 shall be borne by
the Company.  "Registration Expenses" shall mean all expenses incurred by the
Company in complying with this Section 5, including, without limitation, all
registration, qualification and filing fees, printing expenses, fees and
disbursements of counsel for the Company, the reasonable cost of one special
legal counsel to represent Holder in any such registration, and blue sky fees
and expenses.  "Registration Expense" shall not include (if applicable) any
underwriting discounts or selling commissions.

     (c)  INDEMNIFICATION.

          (i)   The Company will indemnify the Holder, each of its officers and
directors and partners, and each person controlling such Holder within the
meaning of Section 15 of the Securities Act, with respect to which registration,
qualification or compliance has been effected pursuant to this Section 5,
against all expenses, claims, losses, damages or liabilities (or actions in
respect thereof), including any of the foregoing incurred in settlement of any
litigation, commenced or threatened, arising out of or based on any untrue
statement (or alleged untrue statement) of a material fact contained in any
registration statement, prospectus, preliminary prospectus, offering circular or
other document, or any amendment or supplement thereto, incident to any such
registration, qualification or compliance, or based on any omission (or alleged
omission) to state therein a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances in which
they were made, not misleading, or any violation or any alleged violation by the
Company of any rule or regulation promulgated under the Securities Act or the
Exchange Act or any state securities law applicable to the Company in connection
with any such registration, qualification or compliance, and the Company will
reimburse each such Holder, each of its officers and directors, and each person
controlling such Holder, for any legal and any other expenses reasonably
incurred in connection with investigating, preparing or defending any such
claim, loss, damage, liability or action, as such expenses are incurred,
provided that the Company will not be liable in any such case to the extent that
any such claim, loss damage, liability or expense arises out of or is based on
any untrue statement or omission or alleged untrue statement or omission, made
in reliance upon and in conformity with written information furnished to the
Company by an instrument duly executed by such Holder or controlling person and
stated to be specifically for use therein.

          (ii)  The Holder will indemnify the Company, each of its directors and
officers, and each person who controls the Company within the meaning of Section
15 of the Securities Act against all claims, 


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 5



losses, damages and liabilities (or actions in respect thereof) arising out 
of or based on any untrue statement (or alleged untrue statement) of a 
material fact contained in any such registration statement, prospectus, 
offering circular or other document, or any omission (or alleged omission) to 
state therein a material fact required to be stated therein or necessary to 
make the statements therein not misleading, and will reimburse the Company, 
such directors, officers or control persons for any legal or any other 
expenses reasonably incurred in connection with investigating or defending 
any such claim, loss, damage, liability or action, as such expenses are 
incurred, in each case to the extent, but only to the extent, that such 
untrue statement (or alleged untrue statement) or omission (or alleged 
omission) is made in such registration statement, prospectus, offering 
circular or other document in reliance upon and in conformity with written 
information furnished to the Company by an instrument duly executed by such 
holder and stated to be specifically for use therein.

6.   RIGHT OF PARTICIPATION.  Upon the first (and only the first) offering (or
series of related offerings in any 90-day period) by the Company subsequent to
the date hereof of any shares of, or securities convertible into or exercisable
for any shares of, any of its capital stock ("SECURITIES"), the Company shall
offer to the Holder and each of its affiliates that holds a Subordinated
Convertible Promissory Note issued by the Company (collectively, the "AFFILIATED
HOLDERS") the option to purchase up to an aggregate of $2,000,000 worth of the
offered Securities not to exceed 50% of the offering (the "AFFILIATED HOLDER
MAXIMUM"), in accordance with the following provisions:

     (a)  The Company shall deliver a notice to the Holder stating (i) its bona
fide intention to offer such Securities, (ii) the number of such Securities to
be offered, (iii) the price, if any, for which it proposes to offer such
Securities, and (iv) the terms of such offer.  The Holder will distribute this
notice to the other Affiliated Holders, and the Affiliated Holders will
apportion the Affiliated Holder Maximum amongst themselves as they see fit.

     (b)  Within fifteen (15) calendar days after receipt of the Notice, the
Holder will notify the Company of the portion of the Affiliated Holder Maximum
that the Affiliated Holders wish to purchase, along with a detailed list of the
apportionment of such Affiliated Holder Maximum amongst the Affiliated Holders.

     (c)  The right of participation in this Section 6 shall not be applicable
(i) to the issuance or sale of shares of capital stock (or options therefor) to
employees, officers, directors or consultants for the primary purpose of
soliciting or retaining their services, (ii) to the issuance or sale of the
Company's securities to leasing entities or financial institutions in connection
with commercial leasing or borrowing transactions, or (iii) to conversions of
convertible securities.

7.   REPRESENTATIONS AND WARRANTIES OF HOLDER.  By its acceptance hereof, Holder
represents and warrants to Company that:

     (a)  Holder has been advised that this Note and the Common Stock of the
Company issuable upon conversion of the Note (with the Note and such Common
Stock being hereinafter collectively referred to as the "Securities") have not
been registered under the Securities Act, or any state securities laws and,
therefore, cannot be resold unless such Securities are registered under the
Securities Act and applicable state securities laws or unless an exemption from
such registration requirements is available.  Holder has not been formed solely
for the purpose of making this investment and is acquiring the Securities for
its own account for investment, not as a nominee or agent, and not with a view
to, or for resale in connection with, the 


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 6



distribution thereof.  Holder has such knowledge and experience in financial 
and business matters that such Holder is capable of evaluating the merits and 
risks of such investment, is able to incur a complete loss of such investment 
and is able to bear the economic risk of such investment for an indefinite 
period of time.

     (b)  Holder acknowledges that Company has given Holder access to all
documents and other information required for Holder to make an informed decision
with respect to the acceptance of the Securities.  In this regard, Holder
acknowledges that it has received and reviewed, among other things, the
following documents filed by the Company with the Securities and Exchange
Commission: (i) the Company's Quarterly Report on Form 10-QSB for the quarter
ended September 30, 1996 and (ii) the Company's Annual Report on Form 10-KSB for
the year ended December 31, 1995.

     (c)  At the time of both the offer and execution of the Note, the Holder
was neither a United States citizen nor a person in the United States.

     (d)  During the term of the Note, the Holder does not intend to sell any of
the Company Common Stock issuable upon conversion of the Notes to any United
States citizen or person in the United States.

8.   ATTORNEYS' FEES.  If the indebtedness represented by this Note or any part
thereof is collected in bankruptcy, receivership or other judicial proceedings
or if this Note is placed in the hands of attorneys for collection after
default, Company agrees to pay, in addition to the principal and interest
payable hereunder, reasonable attorneys' fees and costs incurred by Holder.

9.   NOTICES.  Except as otherwise provided herein, all notices, requests,
demands, consents, instructions or other communications to or upon the Company
or Holder hereunder shall be by telecopy or in writing and telecopied, mailed or
delivered to each party at telecopier number or its address set forth below (or
to such other telecopy number or address as the recipient of any notice shall
have notified the other in writing).  All such notices and communications shall
be effective (a) when sent by Federal Express or other overnight service of
recognized standing, on the business day following the deposit with such service
(if sent to an address in the same country as the sender) or on the third
business day following the deposit with such service (if sent to an address in a
different country from the sender); (b) when mailed, by registered or certified
mail, first class postage prepaid and addressed as aforesaid through the United
States Postal Service, upon receipt; (c) when delivered by hand, upon delivery;
and (d) when telecopied, upon confirmation of receipt.

              HOLDER:        Cetronic AB
                             Box 153, S-864
                             22 Matfors
                             SWEDEN
                             Attention:  President
                             011-46-6067-1300 (telephone)
                             011-46-6067-1309 (telecopy)

              COMPANY:       Socket Communications, Inc.
                             37400 Central Court
                             Newark, CA  94560
                             Attention:  Chief Financial Officer


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 7



                             (415) 744-2700 (telephone)
                             (415) 744-2727 (telecopy)

10.  ACCELERATION.  This Note shall become immediately due and payable (a) upon
an Event of Default, (b) if the Company commences any proceeding in bankruptcy
or for dissolution, liquidation, winding-up, composition or other relief under
state or federal bankruptcy laws, or (c) such proceedings are commenced against
the Company, or a receiver or trustee is appointed for the Company or a
substantial part of its property, and such proceeding or appointment is not
dismissed or discharged within 60 days after its commencement.

11.  WAIVERS.  Company hereby waives presentment, demand for performance, notice
of non-performance, protest, notice of protest and notice of dishonor.  No delay
on the part of Holder in exercising any right hereunder shall operate as a
waiver of such right or any other right.

12.  PAYMENT.  Payment shall be made in lawful tender of the United States.

13.  USURY.  In the event any interest is paid on this Note which is deemed to
be in excess of the then legal maximum rate, then that portion of the interest
payment representing an amount in excess of the then legal maximum rate shall be
deemed a payment of principal and applied against the principal of this Note.

14.  GOVERNING LAW.  This Note and all actions arising out of or in connection
with this Note shall be governed by and construed in accordance with the laws of
the State of California, without regard to the conflicts of law provisions of
the State of California or of any other state or country.

15.  SUCCESSORS AND ASSIGNS.

     (a)  The rights and obligations of the Company and the Holder of this Note
shall be binding upon and benefit the successors, assigns, heirs, administrators
and transferees of the parties.

     (b)  Holder shall not transfer this Note without the prior written consent
of Company, except that Holder may transfer the Note without such prior written
consent to a collection agency following an Event of Default.


<PAGE>

Socket Communications, Inc.
Subordinated Secured Convertible
 Promissory Note
Page 8



     (c)  Neither this Note nor any of the rights, interests or obligations
hereunder may be assigned, by operation of law or otherwise, in whole or in
part, by Company without the prior written consent of the Holder except in
connection with an assignment in whole to a successor corporation to Company,
provided that such successor corporation acquires all or substantially all of
Company's property and assets and Holder's rights hereunder are not impaired.

                                   SOCKET COMMUNICATIONS, INC.


                                   Signature:  /s/ David W. Dunlap 
                                              --------------------------------

                                   Name:  David W. Dunlap 
                                          ------------------------------------

                                   Title: Vice President & CFO 
                                          ------------------------------------


<PAGE>

                                                                       EXHIBIT C

                               FIRST AMENDMENT TO
                SUBORDINATED SECURED CONVERTIBLE PROMISSORY NOTE



     THIS FIRST AMENDMENT TO SUBORDINATED SECURED CONVERTIBLE PROMISSORY NOTE
(this "Amendment"), dated as of July 29, 1997, is entered into by and between
SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "Company"), and
CETRONIC AKTIEBOLAG [PUBL] ("Holder").

     WHEREAS, the Company issued to Holder a Subordinated Secured Convertible
Promissory Note dated January 29, 1997 in the principal amount of $500,000 (the
"Note"); and

     WHEREAS, pursuant to Section 5.11 of that certain Combination Agreement
dated as of June 12, 1997 by and between the Company and Holder, Holder has
agreed to amend the Note to extend its maturity date to December 12, 1997.

     NOW, THEREFORE, in consideration of the foregoing and the mutual agreements
set forth herein, the Company and Holder hereto agree as follows:

     SECTION 1.  AMENDMENT TO NOTE.  Section 1 of the Note is hereby amended to
read in its entirety as follows:

          "(a) Subject to the provisions of Section 1(c) hereof, all
     principal, interest and other amounts due hereunder shall be due and
     payable on the earlier of (i) December 12, 1997 (the "Maturity Date") and
     (ii) the day on which this Note becomes immediately due and payable
     pursuant to Section 10 hereof. 

          (b)  This Note may be prepaid, in whole or in part, from time to time
     ten (10) business days after Holder receives written notice of such
     prepayment from the Company; Holder shall then have until the end of such
     ten (10) business day period to notify the Company in writing that it
     wishes to convert all or part of the outstanding principal and accrued
     interest under this Note into Common Stock pursuant to Section 4 below. 
     Prepayments shall be (i) reduced by any amounts that Holder desires to so
     convert into Common Stock and then (ii) applied first to outstanding
     interest, and then to principal.

          (c)  In the event that the Combination Agreement is terminated other
     than pursuant to Section 7.01(d) or (j), the Maturity Date of this Note
     shall be extended so that it is that business day which is ninety (90) days
     after the date of such termination.

          (d)  Upon payment in full of all principal and interest payable
     hereunder, this Note shall be surrendered to Company for cancellation."

     SECTION 2.  NO OTHER MODIFICATION.  With the exception of the changes to
the Note made herein, this Amendment in no way modifies the terms of the Note.


<PAGE>

First Amendment to Subordinated 
Convertible Promissory Note
Page 2



     SECTION 3.  MISCELLANEOUS.

          (a)  COUNTERPARTS.  This Amendment may be executed in one or more
     counterparts, each of which shall be deemed to be an original, but all of
     which taken together shall constitute one and the same agreement.

          (b)  GOVERNING LAW.  This Amendment shall be governed by, and
     construed in accordance with, the laws of the State of California as
     applied to agreements made and performed in California by residents of the
     State of California without regard to the conflicts of law provisions of
     the State of California or of any other state or country.

          (c)  SEVERABILITY.  If any term, provision, covenant or restriction
     of this Amendment is held by a court of competent jurisdiction or other
     authority to be invalid, void or unenforceable, the remainder of the terms,
     provisions, covenants and restrictions of this Amendment shall remain in
     full force and effect and shall in no way be affected, impaired or
     invalidated.

     IN WITNESS WHEREOF, the Company and Holder have caused this Amendment to be
executed as of the date and year first above written.



                                        SOCKET COMMUNICATIONS, INC.


                                        By: 
                                             ----------------------------------
                                              Charlie Bass,
                                              Acting President and 
                                              Chief Executive Officer



                                        CETRONIC AKTIEBOLAG [PUBL]


                                        Signature: 
                                                   ----------------------------

                                        Name: 
                                               --------------------------------

                                        Title: 
                                               --------------------------------


<PAGE>

                                                                       EXHIBIT C

                               SECOND AMENDMENT TO
                SUBORDINATED SECURED CONVERTIBLE PROMISSORY NOTE



     THIS SECOND AMENDMENT TO SUBORDINATED SECURED CONVERTIBLE PROMISSORY NOTE
(this "AMENDMENT"), dated as of September 15, 1997, is entered into by and
between SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), and
CETRONIC AKTIEBOLAG [PUBL] ("HOLDER").

     WHEREAS, the Company issued to Holder a Subordinated Secured Convertible
Promissory Note dated January 29, 1997 in the principal amount of $500,000;

     WHEREAS, the Company and Holder wish to amend the Note to subordinate the
indebtedness of the Company to Holder under the Note to the indebtedness of the
Company to  World Trade Finance, Inc. ("WORLD TRADE") under financial
accommodations World Trade proposes to provide to the Company.

     NOW, THEREFORE, in consideration of the foregoing and the mutual agreements
set forth herein, the Company and Holder hereto agree as follows:

     SECTION 1.  AMENDMENT TO NOTE.  Sections 2(a) and 2(b) of the Note are
hereby amended to read in their entirety as follows:

          "(a) "Senior Indebtedness" means (A) the principal of and premium, if
     any, and interest on indebtedness of the Company incurred pursuant to the
     Promissory Note and Loan Agreement, each dated as of July 5, 1995, between
     the Company and CivicBank of Commerce; and (B) all present and future
     indebtedness, obligations, liabilities, claims, rights and demands of any
     kind which may be now or hereafter owing from the Company to World Trade in
     connection with that certain Note in the amount of $500,000 (or such lesser
     amount as the Company and World Trade may finally agree) issued by the
     Company in favor of World Trade and a related Commercial Security Agreement
     and Commercial Pledge Agreement between the Company and World Trade,
     including, without limitation, all principal, all interest, all costs and
     attorneys' fees, all sums paid for the purpose of protecting World Trade's
     rights in security (such as paying for insurance on collateral if the owner
     fails to do so), and all other obligations of the Company to World Trade,
     secured or unsecured, of any nature whatsoever.  The Company agrees and the
     holder of this Note, by acceptance thereof, agrees, expressly for the
     benefit of the holder of the Senior Indebtedness, that, except as otherwise
     provided herein, upon (i) an event of default under the Senior
     Indebtedness, or (ii) any dissolution, winding up, or liquidation of the
     Company, whether or not in bankruptcy, insolvency or receivership
     proceedings, the Company shall not pay, and the holder of such Note shall
     not be entitled to receive, any amount in respect of the principal and
     interest of such Note unless and until the Senior Indebtedness shall have
     been paid or otherwise discharged.  Upon (1) an event of default under the
     Senior Indebtedness, or (2) any dissolution, winding up or liquidation of
     the Company, any payment or distribution of assets of the Company, which
     the holder of this Note would be entitled to receive but for the provisions
     hereof, shall be paid by the liquidating trustee or agent or other person
     making such payment or distribution directly to the holders of the Senior
     Indebtedness ratably according to the aggregate amounts remaining unpaid on
     the Senior Indebtedness after giving effect to any concurrent payment or
     distribution to the holders of the Senior Indebtedness.  Subject to the
     payment in full of the Senior Indebtedness and until this Note is paid in
     full, the holder of this Note shall be subrogated to the rights of the
     holders of the Senior Indebtedness (to the extent of payments or
     distributions previously made to the holders of the Senior Indebtedness
     pursuant to this Section 2(a)) to receive payments or distributions of
     assets of the Company applicable to the Senior Indebtedness.  


<PAGE>

Second Amendment to Subordinated 
Convertible Promissory Note 
Page2



          (b)  This Section 2 is not intended to impair, as between the
     Company, its creditors (other than the holders of the Senior Indebtedness)
     and the holder of this Note, the unconditional and absolute obligation of
     the Company to pay the principal of and interest on the Note or affect the
     relative rights of the holder of this Note and the other creditors of the
     Company, other than the holders of the Senior Indebtedness.  Nothing in
     this Note shall prevent the holder of this Note from exercising all
     remedies otherwise permitted by applicable law upon default under the Note,
     subject to the rights, if any, of the holders of the Senior Indebtedness in
     respect to cash, property or securities of the Company received upon the
     exercise of any such remedy."

     SECTION 2.  NO OTHER MODIFICATION.  With the exception of the changes to
the Note made herein, this Amendment in no way modifies the terms of the Note.

     SECTION 3.  MISCELLANEOUS.

          (a)  COUNTERPARTS.  This Amendment may be executed in one or more
     counterparts, each of which shall be deemed to be an original, but all of
     which taken together shall constitute one and the same agreement.

          (b)  GOVERNING LAW.  This Amendment shall be governed by, and
     construed in accordance with, the laws of the State of California as
     applied to agreements made and performed in California by residents of the
     State of California without regard to the conflicts of law provisions of
     the State of California or of any other state or country.

          (c)  SEVERABILITY.  If any term, provision, covenant or restriction
     of this Amendment is held by a court of competent jurisdiction or other
     authority to be invalid, void or unenforceable, the remainder of the terms,
     provisions, covenants and restrictions of this Amendment shall remain in
     full force and effect and shall in no way be affected, impaired or
     invalidated.


<PAGE>

Second Amendment to Subordinated
Convertible Promissory Note
Page 3



     IN WITNESS WHEREOF, the Company and Holder have caused this Amendment to be
executed as of the date and year first above written.



                                        SOCKET COMMUNICATIONS, INC.


                                        By: 
                                             ----------------------------------
                                              Charlie Bass,
                                              Acting President and 
                                              Chief Executive Officer



                                        CETRONIC AKTIEBOLAG [PUBL]


                                        Signature: 
                                                   ----------------------------

                                        Name: 
                                               --------------------------------

                                        Title: 
                                               --------------------------------



<PAGE>

                                                                       EXHIBIT D


THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH A
VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF.  THE SECURITIES
MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION AND
QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIC LIMITED CIRCUMSTANCES, AN
OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY COUNSEL FOR THE COMPANY, THAT
SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.


                           SOCKET COMMUNICATIONS, INC.

                    SUBORDINATED CONVERTIBLE PROMISSORY NOTE

                                                              Newark, California
$500,000                                                           June 12, 1997

     SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), for
value received, hereby promises to pay to the order of Cetronic Aktiebolag
[Publ] or holder ("HOLDER") in lawful money of the United States at the address
of Holder set forth below, the principal amount of Five Hundred Thousand Dollars
($500,000), together with simple interest at the rate of eight percent (8%) per
annum (calculated on the basis of actual days elapsed and a year of 365 days). 
Subject to the following sentence, accrued interest shall be payable in cash
only at the time the Company pays any portion of the principal amount of this
Note.  If this Note is converted pursuant to Section 4 hereof, accrued interest
may be converted as set forth therein; any accrued interest that is not so
converted shall be payable in cash.

     This Note has been executed in connection with a Combination Agreement
dated as of June 12, 1997 by and between the Company and the Holder (the
"COMBINATION AGREEMENT") pursuant to which the Company will acquire all of the
outstanding shares of the Holder and the Holder will become a wholly-owned
subsidiary of the Company.

     The following is a statement of the rights of Holder and the conditions to
which this Note is subject, and to which the Holder hereof, by the acceptance of
this Note, agrees.

1.   PAYMENTS; PREPAYMENTS.

     (a)  Subject to the provisions of Section 1(c) hereof, all principal,
interest and other amounts due hereunder shall be due and payable on the earlier
of (i) December 12, 1997 (the "MATURITY DATE") and (ii) the day on which this
Note becomes immediately due and payable pursuant to Section 10 hereof.

     (b)  This Note may be prepaid, in whole or in part, from time to time ten
(10) business days after Holder receives written notice of such prepayment from
the Company; Holder shall then have until the end of such ten (10) business day
period to notify the Company in writing that it wishes to convert all or part of
the outstanding principal and accrued interest under this Note into Common Stock
pursuant to Section 4 below.  Prepayments shall be (i) reduced by any amounts
that Holder desires to so convert into Common Stock and then (ii) applied first
to outstanding interest, and then to principal.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 2


     (c)  In the event that the Combination Agreement is terminated other than
pursuant to Section 7.01(d) or (j), the maturity Date of this Note shall be
extended to the business day which is ninety (90) days after the date of such
termination.

     (d)  upon payment in full of all principal and interest payable hereunder,
this Note shall be surrendered to Company for cancellation.

     (e)  In the event that the Combination Agreement is terminated and Sections
7.05(c) thereof is applicable, Cetronic shall convert outstanding principal and
accrued interest under this Note into Common stock of the Company in accordance
with the terms hereof and the Combination Agreement.

2.   SUBORDINATION

     (a)  "Senior Indebtedness" means the principal of and premium, if any, and
interest on indebtedness of the Company incurred pursuant to the Promissory Note
and Loan Agreement, each dated as of July 5, 1995, between the Company and
CivicBank of Commerce.  The company agrees and the Holder of this Note, by
acceptance thereof, agrees, expressly for the benefit of the holder of the
Senior Indebtedness, that, except as otherwise provided herein, upon (i) an
event of default under the Senior Indebtedness, or (ii) any dissolution, winding
up, or liquidation of the Company, whether or not in bankruptcy, insolvency or
receivership proceedings, the Company shall not pay, and the holder of such Note
shall not be entitled to receive, any amount in respect of the principal and
interest of such Note unless and until the Senior Indebtedness shall have been
paid or otherwise discharged.  Upon (1) an event of default under the Senior
Indebtedness, or (2) any dissolution, winding up or liquidation of the Company,
any payment or distribution of assets of the Company, which the holder of this
Note would be entitled to receive but for the provisions hereof, shall be paid
by the liquidating trustee or agent or other person making such payment or
distribution directly to the holder of the Senior Indebtedness ratably according
to the aggregate amounts remaining unpaid on the Senior Indebtedness after
giving effect to any concurrent payment or distribution to the holder of the
Senior Indebtedness.  Subject to the payment in full of the Senior Indebtedness
and until this Note is paid in full, the holder of this Note shall be subrogated
to the rights of the holder of the Senior Indebtedness (to the extent of
payments of distributions previously made to the holder of the Senior
Indebtedness pursuant to this Section 2(a)) to receive payments or distributions
of assets of the Company applicable to the Senior Indebtedness.

     (b)  This Section 2 is not intended to impair, as between the Company, its
creditors (other than the holder of the Senior Indebtedness) and the holder of
this Note, the unconditional and absolute obligation of the Company to pay the
principal of and interest on the Note or affect the relative rights of the
holder of this Note and the other creditors os the Company, other than the
holder of the Senior Indebtedness.  Nothing in this Note shall prevent the
holder of this Note from exercising all remedies otherwise permitted by
applicable law upon default under the Note, subject to the rights, if any, of
the holder of the Senior Indebtedness in respect to cash, property or securities
of the Company received upon the exercise of any such remedy.

3.   EVENTS OF DEFAULT.  The Company's failure to pay (i) when due any principal
payment on the due date hereunder or (ii) any interest or other payment required
under the terms of this Note on the date due, and failure to make such payment
within five (5) business days of Company's receipt of Holder's written notice to
Company of such failure to pay, shall constitute an "Event of Default" under
this Note.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 3


4.   CONVERSION.

     (a)  In lieu of receiving cash payment for principal amounts and accrued
interest due under this Note, Holder shall have the right to convert outstanding
principal and accrued interest under this Note into Common Stock of the Company
at a conversion price per share equal to $1.00 (the "CONVERSION PRICE") at any
time on or prior to the Maturity Date.

     (b)  In addition to the conversion right provided in Section 4(a) above,
upon an Event of Default, in lieu of receiving cash payment for principal
amounts and accrued interest due under this Note, Holder shall have the right to
convert outstanding principal and accrued interest under this Note into Common
Stock of the Company at a conversion price per share equal to the lower of
(i) the Conversion Price or (ii) 65% of the average closing price of the
Company's Common Stock on the OTC Bulletin Board or Nasdaq SmallCap market, as
applicable, for the five (5) business days prior to the date of the Event of
Default.

     (c)  Holder may exercise its conversion right by providing written notice
to the Company of Holder's intention to exercise its conversion right and the
amount of principal and accrued interest that it wishes to convert (the
"CONVERSION AMOUNT") at least ten (10) days prior to the date on which it wishes
to convert (the "CONVERSION DATE") (unless such notice is given pursuant to the
terms of Section 1(b) above, in which event notice shall comply with the terms
thereof).  No fractional shares of Common Stock shall be issued upon conversion
of this Note.  Promptly after the conversion of this Note, the Holder shall
surrender this Note, duly endorsed, at the principal office of Company.  At its
expense, Company shall, as soon as practicable thereafter (or as otherwise noted
in the provisions above), issue and deliver to such Holder at such principal
office a certificate or certificates for the number of shares of such Common
Stock to which the Holder shall be entitled upon such conversion (bearing such
legends as are required by applicable state and federal securities laws in the
opinion of counsel to Company).  In addition, unless this Note has been fully
converted, a new Note representing the principal amount that shall not have been
converted into Common Stock shall also be issued to Holder as soon as possible
thereafter.  Upon conversion of this Note in full, Company shall be forever
released from all its obligations and liabilities under this Note including
principal, interest and any other amounts due and owing pursuant hereto.  Any
notice from the Holder of an election to convert by the Company shall be
irrevocable.

     (d)  If at any time the number of authorized but unissued shares of Common
Stock shall not be sufficient to effect the conversion of the entire outstanding
principal amount and accrued interest under this Note, Company will use its best
efforts to take such corporate action as may be necessary, in the opinion of its
counsel, to increase its authorized but unissued shares of Common Stock to such
number of shares as shall be sufficient for such purposes.

     (e)  In the event that the Combination Agreement is terminated and Section
7.05(c) thereof is applicable, Cetronic shall convert outstanding principal and
accrued interest under this Note into Common Stock of the Company in accordance
with the terms hereof and the Combination Agreement.

5.   REGISTRATION RIGHT.

     (a)  Following the Maturity Date, and within a reasonable amount of time
following the conversion by Holder of any outstanding principal and accrued
interest under this Note into Common Stock of the Company, the Company will use
reasonable efforts to (i) file a registration statement under the 

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 4


Securities Act of 1933, as amended (the "SECURITIES ACT") registering such 
shares for resale to the public, (ii) have such registration statement 
declared effective by the Securities and Exchange Commission, (iii) register 
and qualify the securities covered by such registration statement under the 
Blue Sky laws of such jurisdictions as shall be reasonably requested by the 
Holder (provided that the Company shall not be required in connection 
therewith or as a condition thereto to qualify to do business or to file a 
general consent to service of process in any such states or jurisdictions, 
unless the Company is already subject to service in such jurisdiction and 
except as may be required by the Securities Act), (iv) cause all securities 
registered pursuant hereunder to be listed on each securities exchange on 
which similar securities issued by the Company are then listed, and (v) file 
updates to such registration statement as necessary to keep it effective 
until the date that all remaining such shares may be sold to the public 
without registration within a period of 90 days; PROVIDED THAT, the Company 
may suspend such registration for up to two (2) periods of not more than 90 
days each in any 12-month period if necessary (x) to enable the Company to 
update the registration statement or (y) to undertake another sale of 
securities.

     (b)  All Registration Expenses (as hereafter defined) incurred in
connection with any registration pursuant to this Section 5 shall be borne by
the Company.  "Registration Expenses" shall mean all expenses incurred by the
Company in complying with this Section 5, including, without limitation, all
registration, qualification and filing fees, printing expenses, fees and
disbursements of counsel for the Company, the reasonable costs of one special
legal counsel to represent Holder in any such registration, and blue sky fees
and expenses.  "Registration Expenses" shall not include (if applicable) any
underwriting discounts or selling commissions.

     (c)  INDEMNIFICATION.

          (i)   The Company will indemnify the Holder, each of its officers and
directors and partners, and each person controlling such Holder within the
meaning of Section 15 of the Securities Act, with respect to which registration,
qualification or compliance has been effected pursuant to this Section 5,
against all expenses, claims, losses, damages or liabilities (or actions in
respect thereof), including any of the foregoing incurred in settlement of any
litigation, commenced or threatened, arising out of or based on any untrue
statement (or alleged untrue statement) of a material fact contained in any
registration statement, prospectus, preliminary prospectus, offering circular or
other document, or any amendment or supplement thereto, incident to any such
registration, qualification or compliance, or based on any omission (or alleged
omission) to state therein a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances in which
they were made, not misleading, or any violation or any alleged violation by the
Company of any rule or regulation promulgated under the Securities Act or the
Exchange Act or any state securities law applicable to the Company in connection
with any such registration, qualification or compliance, and the Company will
reimburse each such Holder, each of its officers and directors, and each person
controlling such Holder, for any legal and any other expenses reasonably
incurred in connection with investigating, preparing or defending any such
claim, loss, damage, liability or action, as such expenses are incurred,
provided that the Company will not be liable in any such case to the extent that
any such claim, loss, damage, liability or expense arises out of or is based on
any untrue statement or omission or alleged untrue statement or omission, made
in reliance upon and in conformity with written information furnished to the
Company by an instrument duly executed by such Holder or controlling person and
stated to be specifically for use therein.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 5


     (ii) The Holder will indemnify the Company, each of its directors and
officers, and each person who controls the Company within the meaning of Section
15 of the Securities Act against all claims, losses, damages and liabilities (or
actions in respect thereof) arising out of or based on any untrue statement (or
alleged untrue statement) of a material fact contained in any such registration
statement, prospectus, offering circular or other document, or any omission (or
alleged omission) to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, and will reimburse
the Company, such directors, officers or control persons for any legal or any
other expenses reasonably incurred in connection with investigating or defending
any such claim, loss, damage, liability or action, as such expenses are
incurred, in each case to the extent, but only to the extent, that such untrue
statement (or alleged untrue statement) or omission (or alleged omission) is
made in such registration statement, prospectus, offering circular or other
document in reliance upon and in conformity with written information furnished
to the Company by an instrument duly executed by such Holder and stated to be
specifically for use therein.

6.   RIGHT OF PARTICIPATION.  Upon the first (and only the first) offering (or
series of related offerings in any 90-day period) by the Company subsequent to
the date hereof of any shares of, or securities convertible into or exercisable
for any shares of, any class of its capital stock ("SECURITIES"), the Company
shall offer to the Holder and each of its affiliates that holds a Subordinated
Convertible Promissory Note issued by the Company (collectively, the "AFFILIATED
HOLDERS") the option to purchase up to an aggregate of $2,000,000 worth of the
offered Securities not to exceed 50% of the offering (the "AFFILIATED HOLDER
MAXIMUM"), in accordance with the following provisions:

     (a)  The company shall deliver a notice to the Holder stating (i) its bona
fide intention to offer such Securities, (ii) the number of such Securities to
be offered, (iii) the price, if any, for which it proposes to offer such
Securities, and (iv) the terms of such offer.  The Holder will distribute this
notice to the other Affiliated Holders, and the Affiliated Holders will
apportion the Affiliated Holder Maximum amongst themselves as they see fit.

     (b)  Within fifteen (15) calendar days after receipt of the Notice, the
Holder will notify the Company of the portion of the Affiliated Holder Maximum
that the Affiliated Holders wish to purchase, along with a detailed list of the
apportionment of such Affiliated Holder maximum amongst the Affiliated Holders.

     (c)  The right of participation in this Section 6 shall not be applicable
(i) to the issuance or sale of shares of capital stock (or options therefor) to
employees, officers, directors or consultants for the primary purpose of
soliciting or retaining their services, (ii) to the issuance or sale of the
Company's securities to leasing entities or financial institutions in connection
with commercial leasing or borrowing transactions, or (iii) to conversions of
convertible securities.

7.   REPRESENTATIONS AND WARRANTIES OF HOLDER.  By its acceptance hereof, Holder
represents and warrants to Company that:

     (a)  Holder has been advised that this Note and the Common Stock of the
Company issuable upon conversion of the Note (with the Note and such Common
Stock being hereinafter collectively referred to as the "SECURITIES") have not
been registered under the Securities Act, or any state securities laws and,
therefore, cannot be resold unless such Securities are registered under the
Securities Act and applicable state securities laws or unless an exemption from
such registration requirements is available.  Holder has not been 

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 6


formed solely for the purpose of making this investment and is acquiring the 
Securities for its own account for investment, not as a nominee or agent, and 
not with a view to, or for resale in connection with, the distribution 
thereof.  Holder has such knowledge and experience in financial and business 
matters that such Holder is capable of evaluating the merits and risks of 
such investment, is able to incur a complete loss of such investment and is 
able to bear the economic risk of such investment for an indefinite period of 
time.

     (b)  Holder acknowledges that Company has given Holder access to all
documents and other information required for Holder to make an informed decision
with respect to the acceptance of the Securities.  In this regard, Holder
acknowledges that it has received and reviewed, among other things, the
following documents filed by the Company with the Securities and Exchange
Commission:  (i) the Company's Quarterly Report on Form 10-QSB for the quarter
ended March 31, 1997; (ii) the Company's Annual Report on Form 10-KSB for the
year ended December 31, 1996; and (iii) the Company's Proxy Statement relating
to its 1997 Annual Meeting of Stockholders.

     (c)  At the time of both the offer and execution of the Note, the Holder
was neither a United States citizen nor a person in the United States.

     (d)  During the term of the Note, the Holder does not intend to sell any of
the Company Common Stock issuable upon conversion of the Note to any United
States citizen or person in the United States.

8.   ATTORNEYS' FEES.  If the indebtedness represented by this Note or any part
thereof is collected in bankruptcy, receivership or other judicial proceedings
or if this Note is placed in the hands of attorneys for collection after
default, Company agrees to pay, in addition to the principal and interest
payable hereunder, reasonable attorneys' fees and costs incurred by Holder.

9.   NOTICES.  Except as otherwise provided herein, all notices, requests,
demands, consents, instructions or other communications to or upon the Company
or Holder hereunder shall be by telecopy or in writing and telecopied, mailed or
delivered to each party at telecopier number or its address set forth below (or
to such other telecopy number or address as the recipient of any notice shall
have notified the other in writing).  All such notices and communications shall
be effective (a) when sent by Federal Express or other overnight service of
recognized standing, on the business day following the deposit with such service
(if sent to an address in the same country as the sender) or on the third
business day following the deposit with such service (if sent to an address in a
different country from the sender); (b) through the United States Postal
Service, upon receipt; (c) when delivered by hand, upon delivery; and (d) when
telecopied, upon confirmation of receipt.

                HOLDER:            Cetronic Aktiebolag [Publ]
                ------             Box 153, S-864
                                   22 Matfors
                                   SWEDEN
                                   Attention:  President
                                   011-46-6067-1300 (telephone)
                                   011-46-6067-1309 (telecopy)

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 7


                COMPANY:           Socket Communications, Inc.
                -------            37400 Central Court
                                   Newark, CA 94560
                                   Attention:  Chief Financial Officer
                                   (415) 744-2700 (telephone)
                                   (415) 744-2727 (telecopy)

10.  ACCELERATION.  This Note shall become immediately due and payable (a) upon
an Event of Default, (b) if the Company commences any proceeding in bankruptcy
or for dissolution, liquidation, winding-up, composition or other relief under
state or federal bankruptcy laws, or (c) if such proceedings are commenced
against the Company, or a receiver or trustee is appointed for the Company or a
substantial part of its property, and such proceeding or appointment is not
dismissed or discharged within 60 days after its commencement.

11.  WAIVERS.  Company hereby waives presentment, demand for performance, notice
of non-performance, protest, notice of protest and notice of dishonor.  No delay
on the part of Holder in exercising any right hereunder shall operate as a
waiver of such right or any other right.

12.  PAYMENT.  Payment shall be made in lawful tender of the United States.

13.  USURY.  In the event any interest is paid on this Note which is deemed to
be in excess of the then legal maximum rate, then that portion of the interest
payment representing an amount in excess of the then legal maximum rate shall be
deemed a payment of principal and applied against the principal of this Note.

14.  GOVERNING LAW.  This Note and all actions arising out of or in connection
with this Note shall be governed by and construed in accordance with the laws of
the State of California, without regard to the conflicts of law provisions of
the State of California or of any other state or country.

15.  SUCCESSORS AND ASSIGNS.

     (a)  The rights and obligations of the Company and the Holder of this Note
shall be binding upon and benefit the successors, assigns, heirs, administrators
and transferees of the parties.

     (b)  Holder shall not transfer this Note without the prior written consent
of Company, except that Holder may transfer the Note without such prior written
consent to a collection agency following an Event of Default.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible
Promissory Note
June 12, 1997
Page 8


     (c)  Neither this Note nor any of the rights, interests or obligations
hereunder may be assigned, by operation of law or otherwise, in whole or in
part, by Company without the prior written consent of the Holder except in
connection with an assignment in whole to a successor corporation to Company,
provided that such successor corporation acquires all or substantially all of
Company's property and assets and Holder's rights hereunder and under the
Security Agreement are not impaired.

                                        SOCKET COMMUNICATIONS, INC.


                                        Signature:
                                                  -------------------------

                                        Name:
                                             ------------------------------

                                        Title:
                                              -----------------------------

                                        Date:
                                             ------------------------------



Agreed and Accepted:

CETRONIC AKTIEBOLAG [PUBL]


Signature:
          ------------------------------

Name:
     -----------------------------------


Title:
      ----------------------------------


Date:
     -----------------------------------


<PAGE>

                                                                       EXHIBIT D

                               FIRST AMENDMENT TO
                    SUBORDINATED CONVERTIBLE PROMISSORY NOTE



     THIS FIRST  AMENDMENT TO SUBORDINATED CONVERTIBLE PROMISSORY NOTE (this
"AMENDMENT"), dated as of September 15, 1997, is entered into by and between
SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), and
CETRONIC AKTIEBOLAG [PUBL] ("HOLDER").

     WHEREAS, the Company issued to Holder a Subordinated Convertible Promissory
Note dated June 12, 1997 in the principal amount of $500,000;

     WHEREAS, the Company and Holder wish to amend the Note to subordinate the
indebtedness of the Company to Holder under the Note to the indebtedness of the
Company to  World Trade Finance, Inc. ("WORLD TRADE") under financial
accommodations World Trade proposes to provide to the Company.

     NOW, THEREFORE, in consideration of the foregoing and the mutual agreements
set forth herein, the Company and Holder hereto agree as follows:

     SECTION 1.  AMENDMENT TO NOTE.  Sections 2(a) and 2(b) of the Note are
hereby amended to read in their entirety as follows:

          "(a) "Senior Indebtedness" means (A) the principal of and premium, if
     any, and interest on indebtedness of the Company incurred pursuant to the
     Promissory Note and Loan Agreement, each dated as of July 5, 1995, between
     the Company and CivicBank of Commerce; and (B) all present and future
     indebtedness, obligations, liabilities, claims, rights and demands of any
     kind which may be now or hereafter owing from the Company to World Trade in
     connection with that certain Note in the amount of $500,000 (or such lesser
     amount as the Company and World Trade may finally agree) issued by the
     Company in favor of World Trade and a related Commercial Security Agreement
     and Commercial Pledge Agreement between the Company and World Trade,
     including, without limitation, all principal, all interest, all costs and
     attorneys' fees, all sums paid for the purpose of protecting World Trade's
     rights in security (such as paying for insurance on collateral if the owner
     fails to do so), and all other obligations of the Company to World Trade,
     secured or unsecured, of any nature whatsoever.  The Company agrees and the
     holder of this Note, by acceptance thereof, agrees, expressly for the
     benefit of the holder of the Senior Indebtedness, that, except as otherwise
     provided herein, upon (i) an event of default under the Senior
     Indebtedness, or (ii) any dissolution, winding up, or liquidation of the
     Company, whether or not in bankruptcy, insolvency or receivership
     proceedings, the Company shall not pay, and the holder of such Note shall
     not be entitled to receive, any amount in respect of the principal and
     interest of such Note unless and until the Senior Indebtedness shall have
     been paid or otherwise discharged.  Upon (1) an event of default under the
     Senior Indebtedness, or (2) any dissolution, winding up or liquidation of
     the Company, any payment or distribution of assets of the Company, which
     the holder of this Note would be entitled to receive but for the provisions
     hereof, shall be paid by the liquidating trustee or agent or other person
     making such payment or distribution directly to the holders of the Senior
     Indebtedness ratably according to the aggregate amounts remaining unpaid on
     the Senior Indebtedness after giving effect to any concurrent payment or
     distribution to the holders of the Senior Indebtedness.  Subject to the
     payment in full of the Senior Indebtedness and until this Note is paid in
     full, the holder of this Note shall be subrogated to the rights of the
     holders of the Senior Indebtedness (to the extent of payments or
     distributions previously made to the holders of the Senior Indebtedness
     pursuant to this Section 2(a)) to receive payments or distributions of
     assets of the Company applicable to the Senior Indebtedness.  


<PAGE>

First Amendment to Subordinated
Convertible Promissory Note
Page 2


          (b)  This Section 2 is not intended to impair, as between the
     Company, its creditors (other than the holders of the Senior Indebtedness)
     and the holder of this Note, the unconditional and absolute obligation of
     the Company to pay the principal of and interest on the Note or affect the
     relative rights of the holder of this Note and the other creditors of the
     Company, other than the holders of the Senior Indebtedness.  Nothing in
     this Note shall prevent the holder of this Note from exercising all
     remedies otherwise permitted by applicable law upon default under the Note,
     subject to the rights, if any, of the holders of the Senior Indebtedness in
     respect to cash, property or securities of the Company received upon the
     exercise of any such remedy."

     SECTION 2.  NO OTHER MODIFICATION.  With the exception of the changes to
the Note made herein, this Amendment in no way modifies the terms of the Note.

     SECTION 3.  MISCELLANEOUS.

          (a)  COUNTERPARTS.  This Amendment may be executed in one or more
     counterparts, each of which shall be deemed to be an original, but all of
     which taken together shall constitute one and the same agreement.

          (b)  GOVERNING LAW.  This Amendment shall be governed by, and
     construed in accordance with, the laws of the State of California as
     applied to agreements made and performed in California by residents of the
     State of California without regard to the conflicts of law provisions of
     the State of California or of any other state or country.

          (c)  SEVERABILITY.  If any term, provision, covenant or restriction
     of this Amendment is held by a court of competent jurisdiction or other
     authority to be invalid, void or unenforceable, the remainder of the terms,
     provisions, covenants and restrictions of this Amendment shall remain in
     full force and effect and shall in no way be affected, impaired or
     invalidated.

<PAGE>

First Amendment to Subordinated
Convertible Promissory Note
Page 3


     IN WITNESS WHEREOF, the Company and Holder have caused this Amendment to be
executed as of the date and year first above written.


                                   SOCKET COMMUNICATIONS, INC.


                                   By:
                                       ---------------------------------------
                                         Charlie Bass,
                                         Acting President and 
                                         Chief Executive Officer


                                   CETRONIC AKTIEBOLAG [PUBL]


                                   Signature:
                                             ---------------------------------

                                   Name:
                                         -------------------------------------

                                   Title:
                                          ------------------------------------

<PAGE>

                                                                       EXHIBIT E

THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH A
VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF, THE SECURITIES
MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION AND
QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIC LIMITED CIRCUMSTANCES, AN
OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY COUNSEL FOR THE COMPANY, THAT
SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.


                           SOCKET COMMUNICATIONS, INC.

                    SUBORDINATED CONVERTIBLE PROMISSORY NOTE


                                                              Newark, California

$__________                                                    February 14, 1997



     SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), for
value received, hereby promises to pay to the order of _______________ or holder
("HOLDER") in lawful money of the United States at the address of Holder set
forth below, the principal amount of ______________________ ($_______), together
with simple interest at the rate of eight percent (8%) per annum (calculated on
the basis of actual days elapsed and a year of 365 days).  Accrued interest
shall be payable in cash only at the time the Company pays any portion of the
principal amount of this Note.  If this Note is converted pursuant to Section 4
hereof, accrued interest may be converted as set forth therein; any accrued
interest that is not so converted shall be payable in cash.

     The following is a statement of the rights of Holder and the conditions to
which this Note is subject, and to which the Holder hereof, by the acceptance of
this Note, agrees.

     1.   PAYMENTS; PREPAYMENTS.

          (a)  All Principal, interest and other amounts due hereunder shall be
due and payable on the earlier of (i) August 14, 1997 (the "MATURITY DATE") and
(ii) the day on which this Note becomes immediately due and payable pursuant to
Section 10 hereof.

          (b)  This Note may be prepaid, in whole or in part, from time to time
ten (10) business days after Holder receives written notice of such prepayment
from the Company; Holder shall then have until the end of such ten (10) business
day period to notify the Company in writing that it wishes to convert all or
part of the outstanding principal and accrued interest under this Note into
Common Stock pursuant to Section 4 below.  Prepayments shall be (i) reduced by
any amounts that Holder desires to so convert into Common Stock and then (ii)
applied first to outstanding interest, and then to principal.

          (c)  Upon payment in full of all principal and interest payable
hereunder, this Note shall be surrendered to Company for cancellation.


<PAGE>

Socket Communications, Inc.
Subordinated Convertible Promissory Note
Page 2



     2.   SUBORDINATION.

          (a)  "Senior Indebtedness" means the principal of and premium, if
any, and interest on indebtedness of the Company incurred pursuant to the
Promissory Note and Loan Agreement, each dated as of July 5, 1995, between the
Company and CivicBank of Commerce.  The Company agrees and the holder of this
Note, by acceptance thereof, agrees, expressly for the benefit of the holder of
the Senior Indebtedness, that, except as otherwise provided herein, upon (i) an
event of default under the Senior Indebtedness, or (ii) any dissolution, winding
up, or liquidation of the Company, whether or not in bankruptcy, insolvency or
receivership proceedings, the Company shall not pay, and the holder of such Note
shall not be entitled to receive, any amount in respect of the principal and
interest of such Note unless and until the Senior Indebtedness shall have been
paid or otherwise discharged.  Upon (1) an event of default under any Senior
Indebtedness, or (2) any dissolution, winding up or liquidation of the Company,
any payment or distribution of assets of the Company, which the holder of this
Note would be entitled to receive but for the provisions hereof, shall be paid
by the liquidating trustee or agent or other person making such payment or
distribution directly to the holder of the Senior Indebtedness ratably according
to the aggregate amounts remaining unpaid on Senior Indebtedness after giving
effect to any concurrent payment or distribution to the holder of Senior
Indebtedness and until this Note is paid in full, the holder of this Note shall
be subrogated to the rights of the holders of the Senior Indebtedness (to the
extent of payments or distributions previously made to the holders of Senior
Indebtedness pursuant to this Section 2(a)) to receive payments or distributions
of assets of the Company applicable to the Senior Indebtedness.

          (b)  This Section 2 is not intended to impair, as between the
Company, its creditors (other than the holders of Senior Indebtedness) and the
holder of this Note, the unconditional and absolute obligation of the Company to
pay the principal of and interest on the Note or affect the relative rights of
the holder of this Note and the other creditors of the Company, other than the
holders of Senior Indebtedness.  Nothing in this Note shall prevent the holder
of this Note from exercising all remedies otherwise permitted by applicable law
upon default under the Note, subject to the rights, if any, of the holders of
Senior Indebtedness in respect to cash, property or securities of the Company
received upon the exercise of any such remedy.

     3.   EVENTS OF DEFAULT.  The Company's failure to pay (i) when due any
principal payment on the due date hereunder or (ii) any interest or other
payment required under the terms of this Note on the date due, and failure to
make such payment within five (5) business days of the Company's receipt of
Holder's written notice to Company of such failure to pay shall constitute an
Event of Default.

     4.   CONVERSION.  

          (a)  In lieu of receiving cash payment for principal amounts and
accrued interest due under this Note, Holder shall have the right to convert
outstanding principal and accrued interest under this Note into Common Stock of
the Company at the conversion price per share equal to $1.00 (the "CONVERSION
PRICE") at any time on or prior to the Maturity Date.  

          (b)  In addition to the conversion right provided in Section 4(a)
above, upon an Event of Default, in lieu of receiving cash payment for principal
amounts and accrued interest due under this Note, Holder shall have the right to
convert outstanding principal and accrued interest under this Note into Common
Stock of the Company at a conversion price per share equal to the lower of (i)
the Conversion Price or (ii) 65% of the average closing price of the Company's
Common Stock on the OTC Bulletin Board or Nasdaq SmallCap market, as applicable,
for the five (5) business days prior to the date of the Event of Default.


<PAGE>

Socket Communications, Inc.
Subordinated Convertible Promissory Note
Page 3



          (c)  Holder may exercise its conversion right by providing written
notice to the Company of Holder's intention to exercise its conversion right and
the amount of principal and accrued interest that it wishes to convert (the
"CONVERSION AMOUNT") at least ten (10) days prior to the date on which it wishes
to convert (the "CONVERSION DATE") (unless such notice is given pursuant to the
terms of Section 1(b) above, in which event notice shall comply with the terms
thereof).  No fractional shares of Common Stock shall be issued upon conversion
of this Note.  Promptly after the conversion of this Note, the Holder shall
surrender this Note, duly endorsed, at the principal office of Company.  At its
expense, Company shall, as soon as practicable thereafter (or as otherwise noted
in the provisions above), issue and deliver to such Holder at such principal
office a certificate or certificates for the number of shares of such Common
Stock to which the Holder shall be entitled upon such conversion (bearing such
legends as are required by applicable state and federal securities laws in the
opinion of counsel to Company).  In addition, unless this Note has been fully
converted, a new Note representing the principal amount that shall not have been
converted into Common Stock shall also be issued to Holder as soon as possible
thereafter.  Upon conversion of this Note in full, Company shall be forever
released from all its obligations and liabilities under this Note including
principal, interest and any other amounts due and owing pursuant hereto.  Any
notice from the Holder of an election to convert by the Company shall be
irrevocable.

          (d)  If at any time the number of authorized but unissued shares of
Common Stock shall not be sufficient to effect the conversion of the entire
outstanding principal amount and accrued interest under this Note, Company will
use its best efforts to take such corporate action as may be necessary, in the
opinion of its counsel, to increase its authorized but unissued shares of Common
Stock to such number of shares as shall be sufficient for such purposes.

     5.   REGISTRATION RIGHT.

          (a)  Following the Maturity Date, and within a reasonable amount of
time following the conversion by Holder of any outstanding principal and accrued
interest under this Note into Common Stock of the Company, the Company will use
reasonable efforts to (i) file a registration statement under the Securities Act
of 1933, as amended (the "SECURITIES ACT"), registering such shares for resale
to the public, (ii) have such registration statement declared effective by the
Securities and Exchange Commission, and (iii) register and qualify the
securities covered by such registration statement under the Blue Sky laws of
such jurisdictions as shall be reasonably requested by the Holder (provided that
the Company shall not be required in connection therewith or as a condition
thereto to qualify to do business or to file a general consent to service of
process in any such states or jurisdictions, unless the Company is already
subject to service in such jurisdiction and except as may be required by the
Securities Act), (iv) cause all securities registered pursuant hereunder to be
listed on each securities exchange on which similar securities issued by the
Company are listed, and (v) file updates to such registration statement as
necessary to keep it effective until the date that all remaining such shares may
be sold to the public without registration within a period of 90 days; PROVIDED
THAT, the Company may suspend such registration for up to two (2) periods of not
more than 90 days each in any 120 month period if necessary (X) to enable the
Company to update the registration statement or (Y) to undertake another sale of
securities.

          (b)  All Registration Expenses (as hereafter defined) incurred in
connection with any registration pursuant to this Section 5 shall be borne by
the Company.  "Registration Expenses" shall mean all expenses incurred by the
Company in complying with this Section 5, including, without limitation, all
registration, qualification and filing fees, printing expenses, fees and
disbursements of counsel for the Company, the reasonable cost of one special
legal counsel to represent Holder in any such registration, and 


<PAGE>

Socket Communications, Inc.
Subordinated Convertible Promissory Note
Page 4



Blue Sky fees and expenses.  "Registration Expenses" shall not include (if 
applicable) any underwriting discounts or selling commissions.

          (c)  INDEMNIFICATION.

                (i)   The Company will indemnify the Holder, each of its
officers and directors and partners, and each person controlling such Holder
within the meaning of Section 15 of the Securities Act, with respect to which
registration, qualification or compliance has been effected pursuant to this
Section 5, against all expenses, claims, losses, damages or liabilities (or
actions in respect thereof), including any of the foregoing incurred in
settlement of any litigation, commenced or threatened, arising out of or based
on any untrue statement (or alleged untrue statement) of a material fact
contained in any registration statement, prospectus, preliminary prospectus,
offering circular or other document or any amendment or supplement thereto
incident to any such registration, qualification or compliance, or based on any
omission (or alleged omission) to state therein a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances in which they were made, not misleading, or any violation or any
alleged violation by the Company of any rule or regulation promulgated under the
Securities Act or the Exchange Act or any state securities law applicable to the
Company in connection with any such registration, qualification or compliance,
and the Company will reimburse each such Holder, each of its officers and
directors, and each person controlling such Holder, for any legal and any other
expenses reasonably incurred in connection with investigating, preparing or
defending any such claim, loss, damage, liability or action, as such expenses
are incurred, provided that the Company will not be liable in any such case to
the extent that any such claim, loss, damage, liability or expense arises out of
or is based on any untrue statement or omission or alleged untrue statement or
omission, made in reliance upon and in conformity with written information
furnished to the Company by an instrument duly executed by such Holder or
controlling person and stated to be specifically for use therein.

                (ii)  The Holder will indemnify the Company, each of its
directors and officers, and each person who controls the Company within the
meaning of Section 15 of the Securities Act against all claims, losses, damages
and liabilities (or actions in respect thereof) arising out of or based on any
untrue statement (or alleged untrue statement) of a material fact contained in
any such registration statement, prospectus, offering circular or other
document, or any omission (or alleged omission) to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, and will reimburse the Company, such directors, officers or control
persons for any legal or any other expenses reasonably incurred in connection
with investigating or defending any such claim, loss, damage, liability or
action, as such expenses are incurred, in each case to the extent, but only to
the extent, that such untrue statement (or alleged untrue statement) or omission
(or alleged omission) is made in such registration statement, prospectus,
offering circular or other document in reliance upon and in conformity with
written information furnished to the Company by an instrument duly executed by
such Holder and stated to be specifically for use therein.

     6.   RIGHT OF PARTICIPATION.  Upon the first (and only the first) offering
(or series of related offerings in any 90-day period) by the Company subsequent
to the date hereof of any shares of, or securities convertible into or
exercisable for any shares of, any class of its capital stock ("SECURITIES"),
the Company shall offer to (i) the Holder; (ii) Cetronic AB ("CETRONIC") and
(iii) each other affiliate of Cetronic that holds a Subordinated Convertible
Promissory Note issued by he Company (collectively, the "AFFILIATED HOLDERS")
the option to purchase up to an aggregate of $2,000,000 worth of the offered
Securities, not to exceed 50% of the offering (the "AFFILIATED HOLDER MAXIMUM"),
in accordance with the following provisions.


<PAGE>

Socket Communications, Inc.
Subordinated Convertible Promissory Note
Page 5



          (a)   The Company shall deliver a notice to Cetronic stating (i) its
bona fide intention to offer such Securities, (ii) the number of such Securities
to be offered, (iii) the price, if any, for which it proposes to offer such
Securities, and (iv) the terms of such offer.  Cetronic will distribute this
notice to the other Affiliated Holders, and the Affiliated Holders will
apportion the Affiliated Holder Maximum amongst themselves as they see fit.

          (b)   Within fifteen (15) calendar days after receipt of the notice,
Cetronic will notify the Company of the portion of the Affiliated Holder Maximum
that the Affiliated Holders wish to purchase, along with a detailed list of the
appointment of such Affiliated Holder maximum amongst the Affiliated Holders.

          (c)   The right of participation in this Section 6 shall not be
applicable (i) to the issuance or sale of shares of capital stock (or options
therefor) to employees, officers, directors or consultants for the primary
purpose of soliciting or retaining their services, (ii) to the issuance or sale
of the Company's securities to leasing entities or financial institutions in
connection with commercial leasing or borrowing transactions, or (iii) to
conversions of convertible securities.

     7.   REPRESENTATIONS AND WARRANTIES OF HOLDER.  By its acceptance hereof,
Holder represents and warrants to Company that:

          (a)   Holder has been advised that this Note and the Common Stock of
the Company issuable upon conversion of the Note (with the Note and such Common
Stock being hereinafter collectively referred to as the "SECURITIES") have not
been registered under the Securities Act, or any state securities laws and,
therefore, cannot be resold unless such Securities are registered under the
Securities Act and applicable state securities laws or unless an exemption from
such registration requirements is available.  Holder has not been formed solely
for the purpose of making this investment and is acquiring the Securities for
its own account for investment, not as a nominee or agent, and not with a view
to, or for resale in connection with, the distribution thereof.  Holder has such
knowledge and experience in financial and business matters that such Holder is
capable of evaluating the merits and risks of such investment, is able to incur
a complete loss of such investment and is able to bear the economic risk of such
investment for an indefinite period of time.  

          (b)   Holder acknowledges that Company has given Holder access to all
documents and other information required for Holder to make an informed decision
with respect to the acceptance of the Securities.  In this regard, Holder
acknowledges that it has received and reviewed, among other things, the
following documents filed by the Company with the Securities and Exchange
Commission: (i) the Company's Quarterly Report on Form 10-QSB for the quarter
ended September 30, 1996 and (ii) the Company's Annual Report on Form 10-KSB for
the year ended December 31, 1995.

          (c)   At the time of both the offer and execution of the Note, the
holder was neither a United States citizen nor a person in the United States.

          (d)   During the term of the Note, the Holder does not intend to sell
any of the Company Common Stock issuable upon conversion of the Note to any
United States citizen or person in the United States.

     8.   ATTORNEYS'S FEES.  If the indebtedness represented by this Note or any
part thereof is collected in bankruptcy, receivership or other judicial
proceedings or if this Note is placed in the hands of 


<PAGE>

Socket Communications, Inc.
Subordinated Convertible Promissory Note
Page 6



attorneys for collection after default, Company agrees to pay, in addition to 
the principal and interest payable hereunder, reasonable attorneys' fees and 
costs incurred by Holder.

     9.   NOTICES.  Except as otherwise provided herein, all notices, requests,
demands, consents, instructions or other communications to or upon the Company
or Holder hereunder shall be by telecopy or in writing and telecopied, mailed or
delivered to each party at telecopier number or its address set forth below (or
to such other telecopy number or address as the recipient of any notice shall
have notified the other in writing).  All such notices and communications shall
be effective (a) when sent by Federal Express or other overnight service of
recognized standing, on the business day following the deposit with such service
(if sent to an address in the same country as the sender) or on the third
business day following the deposit with such service (if sent to an address in a
different country from the sender; (b) when mailed, by registered or certified
mail, first class postage prepaid and addressed as aforesaid through the United
States Postal Service, upon receipt; (c) when delivered by hand, upon delivery;
and (d) when telecopied, upon confirmation of receipt.

                HOLDER:            _____________________________
                                   _____________________________
                                   _____________________________
                                   _____________________________


                COMPANY:           Socket Communications, Inc.
                                   37400 Central Court
                                   Newark, CA  94560
                                   Attention:  Chief Financial Officer
                                   (415) 744-2700 (telephone)
                                   (415) 744-2727 (telecopy)

     10.  ACCELERATION.  This Note shall become immediately due and payable (a)
upon an Event of Default, (b) if the Company commences any proceeding in
bankruptcy or for dissolution, liquidation, winding-up, composition or other
relief under state or federal bankruptcy laws, or (c) such proceedings are
commenced against the Company, or a receiver or trustee is appointed for the
Company or a substantial part of its property, and such proceeding or
appointment is not dismissed or discharged within 60 days after its
commencement.

     11.  WAIVERS.  Company hereby waives presentment, demand for performance,
notice of non-performance, protest, notice of protest and notice of dishonor. 
No delay on the part of Holder in exercising any right hereunder shall operate
as a waiver of such right or any other right.

     12.  PAYMENT.  Payment shall be made in lawful tender of the United States.

     13.  USURY.  In the event any interest is paid on this Note which is deemed
to be in excess of the then legal maximum rate, then that portion of the
interest payment representing an amount in excess of the then legal maximum rate
shall be deemed a payment of principal and applied against the principal of this
Note.  


<PAGE>

Socket Communications, Inc.
Subordinated Convertible Promissory Note
Page 7



     14.  GOVERNING LAW.  This Note and all actions arising out of or in
connection with this Note shall be governed by and construed in accordance with
the laws of the State of California, without regard to the conflicts of law
provisions of the State of California or of any other state or country.

     15.  SUCCESSORS AND ASSIGNS.  

          (a)   The rights and obligations of the Company and the Holder of this
Note shall be binding upon and benefit the successors, assigns, heirs,
administrators and transferees of the parties.

          (b)   Holder shall not transfer this Note without the prior written
consent of Company except that Holder may transfer the Note without such prior
written consent to a collection agency following an Event of Default.

          (c)   Neither this Note nor any of the rights, interests or
obligations hereunder may be assigned, by operation of law or otherwise, in
whole or in part, by Company without the prior written consent of the Holder
except in connection with an assignment in whole to a successor corporation to
Company, provided that such successor corporation acquires all or substantially
all of Company's property and assets and Holder's rights hereunder are not
impaired.


                                        SOCKET COMMUNICATIONS, INC.




                                        ---------------------------------
                                        Signature

                                        Name: 
                                              ---------------------------

                                        Title: 
                                               --------------------------



<PAGE>

                                                                       EXHIBIT F

THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER 
THE SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE 
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH 
A VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF.  THE 
SECURITIES MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH 
REGISTRATION AND QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIED 
LIMITED CIRCUMSTANCES, AN OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY 
COUNSEL FOR THE COMPANY, THAT SUCH REGISTRATION AND QUALIFICATION ARE NOT 
REQUIRED.

                           SOCKET COMMUNICATIONS, INC.

                              AMENDED AND RESTATED
                    SUBORDINATED CONVERTIBLE PROMISSORY NOTED


$___________________                                          NEWARK, CALIFORNIA
                                                               FEBRUARY 14, 1997

     SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), 
for value received, hereby promises to pay to the order of 
_____________________________ or holder ("HOLDER") in lawful money of the 
United States at the address of Holder set forth below, the principal amount 
of (WRITTEN OUT) $____________, together with simple interest at the rate of 
eight percent (8%) per annum (calculated on the basis of actual days elapsed 
and a year of 365 days).  Accrued interest shall be payable in cash only at 
the time the Company pays any portion of the principal amount of this Note.  
If this Note is converted pursuant to Section 4 hereof, accrued interest may 
be converted as set forth therein; any accrued interest that is not so 
converted shall be payable in cash.

     This Note was originally executed on February 14, 1997.  This Note was 
amended and restated as of August 14, 1997 to, among other things, extend the 
Maturity Date (as defined in Section 1(a) hereof) (which amendment and 
restatement shall not be effective until the execution of that certain 
Agreement and Option to Invest by and between the Company and Holder).  The 
following is a statement of the rights of Holder and the conditions to which 
this Note is subject, and to which the Holder hereof, by the acceptance of 
this Note, agrees.

     1.   PAYMENTS; PREPAYMENTS

          (a)   All principal, interest and other amounts due hereunder shall 
be due and payable on the earlier of (i) August 14, 1998 (the "MATURITY 
DATE") and (ii) the day on which this Note becomes immediately due and 
payable pursuant to Section 10 hereof.

          (b)   This Note may be prepaid, in whole or in part, from time to 
time ten (10) business days after Holder receives written notice of such 
prepayment from the Company; Holder shall then have until the end of such ten 
(10) business day period to notify the Company in writing that it wishes to 
convert all or part of the outstanding principal and accrued interest under 
this Note into Common Stock pursuant to Section 4 below.  Prepayments shall 
be (i) reduced by any amounts that Holder desires to so convert into Common 
Stock and then (ii) applied first to outstanding interest, and then to 
principal.

          (c)   Upon payment in full of all principal and interest payable 
hereunder, this Note shall be surrendered to Company for cancellation.

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 2


     2.   SUBORDINATION

          (a)   "Senior Indebtedness" means (a) the principal of and premium, 
if any, and interest on indebtedness of the Company incurred pursuant to the 
Promissory Note and Loan Agreement, each dated as of July 5, 1995, between 
the Company and CivicBank of Commerce; and (b) all present and future 
indebtedness, obligations, liabilities, claims, rights and demands of any 
kind which may be now or hereafter owing from the Company to World Trade in 
connection with that certain Note in the amount of $500,000 (or such lesser 
amount as the Company and World Trade may finally agree) issued by the 
Company in favor of World Trade and a related Commercial Security Agreement 
and Commercial Pledge Agreement between the Company and World Trade, 
including, without limitation, all principal, all interest, all costs and 
attorneys' fees, all sums paid for the purpose of protecting World Trade's 
rights in security (such as paying for insurance on collateral if the owner 
fails to do so), and all other obligations of the Company to World Trade, 
secured or unsecured, of any nature whatsoever.  The Company agrees and the 
holder of this Note, by acceptance thereof, agrees, expressly for the benefit 
of the holder of the Senior Indebtedness, that, except as otherwise provided 
herein, upon (i) an event of default under the Senior Indebtedness, or (ii) 
any dissolution, winding up, or liquidation of the Company, whether or not in 
bankruptcy, insolvency or receivership proceedings, the Company shall not 
pay, and holder of such Note shall not be entitled to receive, any amount in 
respect of the principal and interest of such Note unless and until the 
Senior Indebtedness, shall have been paid or otherwise discharged. Upon (1) 
an event of default under the Senior Indebtedness, or (2) any dissolution, 
winding up or liquidation of the Company, any payment or distribution of 
assets of the Company, which the holder of this Note would be entitled to 
receive but for the provisions hereof, shall be paid by the liquidating 
trustee or agent or other person making such payment or distribution directly 
to the holders of the Senior Indebtedness ratably according to the aggregate 
amounts remaining unpaid on the Senior Indebtedness after giving effect to 
any concurrent payment or distribution to the holders of the Senior 
Indebtedness.  Subject to the payment in full of the Senior Indebtedness and 
until this Note is paid in full, the holder of this Note shall be subrogated 
to the rights of the holders of the Senior Indebtedness (to the extent of 
payments or distributions previously made to the holders of the Senior 
Indebtedness pursuant to this Section 2(a)) to receive payments or 
distributions of assets of the Company applicable to the Senior Indebtedness.

          (b)   This Section 2 is not intended to impair, as between the 
Company, its creditors (other than the holders of the Senior Indebtedness) 
and the holder of this Note, the unconditional and absolute obligation of the 
Company to pay the principal of and interest on the Note or affect the 
relative rights of the holder of this Note and the other creditors of the 
Company, other than the holders of the Senior Indebtedness.  Nothing in this 
Note shall prevent the holder of this Note from exercising all remedies 
otherwise permitted by applicable law upon default under the Note, subject to 
the rights, if any, of the holders of the Senior Indebtedness in respect to 
cash, property or securities of the Company received upon the exercise of any 
such remedy.

     3.   EVENTS OF DEFAULT

          The Company's failure to pay (i) when due any principal payment on 
the due date hereunder or (ii) any interest or other payment required under 
the terms of this Note on the date due, and failure to make such payment 
within five (5) business days of Company's receipt of Holder's written notice 
to Company of such failure to pay, shall constitute an Event of Default.

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 3


     4.   CONVERSION

          (a)   In lieu of receiving cash payment for principal amounts and 
accrued interest due under this Note, Holder shall have the right to convert 
outstanding principal and accrued interest under this Note into Common Stock 
of the Company at a conversion price per share equal to $0.50 (the 
"CONVERSION PRICE") at any time on or prior to the Maturity Date, subject to 
the provisions of Section 2 of that certain Agreement and Option to Invest of 
even date herewith between the Company and Holder.

          (b)   In addition to the conversion right provided in Section 4(a) 
above, upon an Event of Default, in lieu of receiving cash payment for 
principal amounts and accrued interest due under this Note, Holder shall have 
the right to convert outstanding principal and accrued interest under this 
Note into Common Stock of the Company at a conversion price per share equal 
to the lower of (i) the Conversion Price or (ii) 75% of the average closing 
price of the Company's Common Stock on the OTC Bulletin Board or Nasdaq Small 
Cap Market, as applicable, for five (5) business days prior to the date of 
the Event of Default.

          (c)   Holder may exercise its conversion right by providing written 
notice to the Company of Holder's intention to exercise its conversion right 
and the amount of principal and accrued interest that it wishes to convert 
(the "CONVERSION AMOUNT") at least ten (10) days prior to the date on which 
it wishes to convert (the "CONVERSION DATE") (unless such notice is given 
pursuant to the terms of Section 1(b) above, in which event notice shall 
comply with the terms thereof).  No fractional shares of Common Stock shall 
be issued upon conversion of this Note.  Promptly after the conversion of 
this Note, the Holder shall surrender this Note, duly endorsed, at the 
principal office of Company.  At this expense, Company shall, as soon as 
practicable thereafter (or as otherwise noted in the provisions above), issue 
and deliver to such Holder at such principal office a certificate or 
certificates for the number of shares of such Common Stock to which the 
Holder shall be entitled upon such conversion (bearing such legends as are 
required by applicable state and federal securities laws in the opinion of 
counsel to Company).  In addition, unless this Note has been fully converted, 
a new Note representing the principal amount that shall not have been 
converted into Common Stock shall also be issued to Holder as soon as 
possible thereafter.  Upon conversion of this Note in full, Company shall be 
forever released from all its obligations and liabilities under this Note 
including principal, interest and any other amounts due and owing pursuant 
hereto.  Any notice from the Holder of an election to convert by the Company 
shall be irrevocable.

          (d)   If at any time the number of authorized but unissued shares 
of Common Stock shall not be sufficient to effect the conversion of the 
entire outstanding principal amount and accrued interest under this Note, 
Company will use its best efforts to take such corporate action as may be 
necessary, in the opinion of its counsel, to increase its authorized but 
unissued shares of common Stock to such number of shares as shall be 
sufficient for such purposes.

     5.   REGISTRATION RIGHT.

          (a)   Following the Maturity Date, and within a reasonable amount 
of time following the conversion by Holder of any outstanding principal and 
accrued interest under this Note into Common Stock of the Company, the 
Company will use reasonable efforts to (i) file a registration statement 
under the Securities Act of 1933, as amended (the "SECURITIES ACT") 
registering such shares for resale to the public, (ii) have such registration 
statement declared effective by the Securities and Exchange Commission, (iii) 
register and qualify the securities covered by such registration statement 
under the Blue Sky laws of such 

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 4


jurisdictions as shall be reasonably requested by the Holder (provided that 
the Company shall not be required in connection therewith or as a condition 
thereto to qualify to do business or to file a general consent to service of 
process in any such states or jurisdictions, unless the Company is already 
subject to service in such jurisdiction and except as may be required by the 
Securities Act), (iv) cause all securities registered pursuant hereunder to 
be listed on each securities exchange on which similar securities issued by 
the Company are then listed, and (v) file updates to such registration 
statement as necessary to keep it effective until the date that all remaining 
such shares may be sold to the public without registration within a period of 
ninety (90) days; PROVIDED THAT, the Company may suspend such registration 
for up to two periods of not more than ninety (90) days each in any 12-month 
period if necessary (x) to enable the Company to update the registration 
statement or (y) to undertake another sale of securities.

          (b)   All Registration Expenses (as hereafter defined) incurred in 
connection with any registration pursuant to this Section 5 shall be borne by 
the Company.  "Registration Expenses" shall mean all expenses incurred by the 
Company in complying with this Section 5, including, without limitation, all 
registration, qualification and filing fees, printing expenses, fees and 
disbursements of such registration, and blue sky fees and expenses. 
"Registration Expenses" shall not include (if applicable) any underwriting 
discounts or selling commissions.

          (c)   INDEMNIFICATION.

                (i)      The Company will indemnify the Holder, each of its 
officers and directors and partners, and each person controlling such Holder 
within the meaning of Section 15 of the Securities Act, with respect to which 
registration, qualification or compliance has been effected pursuant to this 
Section 5, against all expenses, claims, losses, damages or liabilities (or 
actions in respect thereof), including any of the foregoing incurred in 
settlement of any litigation, commenced or threatened, arising out of or 
based on any untrue statement (or alleged untrue statement) of a material 
fact contained in any registration statement, prospectus, preliminary 
prospectus, offering circular or other document, or any amendment or 
supplement thereto, incident to any such registration, qualification or 
compliance, or based on any omission (or alleged omission) to state therein a 
material fact required to be stated therein or necessary to make the 
statements therein, in light of the circumstances in which they were made, 
not misleading, or any violation or any alleged violation by the Company of 
any rule or regulation promulgated under the Securities Act or the Exchange 
Act or any state securities law applicable to the Company in connection with 
any such registration, qualification or compliance, and the Company will 
reimburse each such Holder, each of its officers and directors, and each 
person controlling such Holder, for any legal and any other expenses 
reasonably incurred in connection with investigating, preparing or defending 
any such claim, loss, damage, liability or action, as such expenses are 
incurred, provided that the Company will not be liable in any such case to 
the extent that any such claim, loss, damage, liability or expense arises out 
of or is based on any untrue statement or omission or alleged untrue 
statement or omission, made in reliance upon and in conformity with written 
information furnished to the Company by an instrument duly executed by such 
Holder or controlling person and stated to be specifically for use therein.

                (ii)     The Holder will indemnify the Company, each of its 
directors and officers, and each person who controls the Company within the 
meaning of Section 15 of the Securities Act against all claims, losses, 
damages and liabilities (or actions in respect thereof) arising out of or 
based on any untrue statement (or alleged untrue statement) of a material 
fact contained in any such registration statement, prospectus, offering 
circular or other document, or any omission (or alleged omission) to state 
therein a 

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 5


material fact required to be stated therein or necessary to make the 
statements therein not misleading, and will reimburse the Company, such 
directors, officers or control persons for any legal or any other expenses 
reasonably incurred in connection with investigating or defending any such 
claim, loss, damage, liability or action, as such expenses are incurred, in 
each case to the extent, but only to the extent, that such untrue statement 
(or alleged untrue statement) or omission (or alleged omission) is made in 
such registration statement, prospectus, offering circular or other document 
in reliance upon and in conformity with written information furnished to the 
Company by an instrument duly executed by such Holder and stated to be 
specifically for use therein.

     6.   RIGHT OF PARTICIPATION.  Upon the first (and only the first) 
offering (or series of related offerings in any 90-day period) by the Company 
subsequent to the date hereof of any shares of, or securities convertible 
into or exercisable for any shares of, any class of its capital stock 
("SECURITIES"), the Company shall offer to the Holder and each of its 
affiliates that holds a Subordinated Convertible Promissory Note issued by 
the Company (collectively, the "AFFILIATED HOLDERS") the option to purchase 
up to an aggregate of Two Million Dollars ($2,000,000) worth of the offered 
Securities not to exceed 50% of the offering (the "AFFILIATED HOLDER 
MAXIMUM"), in accordance with the following provisions:

          (a)   The Company shall deliver a notice to the Holder stating (i) 
its bona fide intention to offer such Securities, (ii) the number of such 
Securities to be offered, (iii) the price, if any, for which it proposes to 
offer such Securities, and (iv) the terms of such offer.  The Holder will 
distribute this notice to the other Affiliated Holders, and the Affiliated 
Holders will apportion the Affiliated Holder Maximum amongst themselves as 
they see fit.

          (b)   Within fifteen (15) calendar days after receipt of the 
Notice, the Holder will notify the Company of the portion of the Affiliated 
Holder Maximum that the Affiliated Holders wish to purchase, along with a 
detailed list of the apportionment of such Affiliated Holder Maximum amongst 
the Affiliated Holders.

          (c)   The right of participation in this Section 6 shall not be 
applicable (i) to the issuance or sale of shares of capital stock (or options 
therefor) to employees, officers, directors or consultants for the primary 
purpose of soliciting or retaining their services, (ii) to the issuance or 
sale of the Company's securities to leasing entities or financial 
institutions in connection with commercial leasing or borrowing transactions, 
or (iii) to conversions of convertible securities.

     7.   REPRESENTATIONS AND WARRANTIES OF HOLDER.  By its acceptance 
hereof, Holder represents and warrants to Company that:

          (a)   Holder has been advised and acknowledges:  (i) that this Note 
and the Common Stock of the Company issuable upon conversion of the Note 
(with the Note and such Common Stock being hereinafter referred to as the 
"SECURITIES") have not been, and when issued, will not be registered under 
the Securities Act, the securities laws of any state of the United States or 
the securities laws of any other country; (ii) that in issuing and selling 
the Securities to Holder pursuant hereto, the Company is relying upon the 
"safe harbor" provided by Regulations S and/or on Section 4(2) under the 
Securities Act; (iii) that it is a condition to the availability of the 
Regulation S safe harbor that the Securities not be offered or sold in the 
United States or to a U.S. Person until the expiration of a period of forty 
(40) days following the issuance of such Securities; (iv) that, 
notwithstanding the foregoing, prior to the expiration of forty (40) days 
after the issuance 

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 6


of such Securities (the "RESTRICTED PERIOD"), the Securities may be offered 
and sold by the holder thereof solely either:  (A) if the offer or sale is 
within the United States or to or for the Account of a U.S. Person (as such 
terms are defined in Regulation S), the securities are offered and sold 
pursuant to an effective registration statement or pursuant to Rule 144 under 
the Securities Act or pursuant to an exemption from the registration 
requirements of the Securities Act; or (B) the offer and sale is outside the 
United States and to other than a U.S. Person. The foregoing restrictions are 
binding upon subsequent transferees of the Securities, except for transferees 
pursuant to an effective registration statement.  After the Restricted 
Period, the Securities may be offered or sold within the United States or to 
or for the account of a U.S. Person only pursuant to applicable securities 
laws.

          (b)   As used herein, the term "United States" means and includes 
the United States of America, its territories and possessions, any State of 
the United States, and the District of Columbia, and the term "U.S. Person" 
(as defined in Regulation S) means:  (i) a natural person (regardless of 
citizenship) resident in the United States; (ii) any partnership or 
corporation organized or incorporated under the laws of the United States; 
(iii) any estate or trust of which any executor, administrator or trustee is 
a U.S. Person; (iv) any agency or branch of a foreign entity located in the 
United States; (v) any nondiscretionary account or similar account (other 
than an estate or trust) held by a dealer or other fiduciary for the benefit 
or account of a U.S. Person (whether or not the dealer or other fiduciary is 
a U.S. Person); (vi) any discretionary account or similar account (other than 
an estate or trust) held by a dealer or other fiduciary organized, 
incorporated and (if an individual) resident in the United States; and (vii) 
a corporation or partnership organized under the laws of any jurisdiction 
other than the United States by a U.S. Person principally for the purpose of 
investing in securities that have not been registered under the Securities 
Act, unless organized or incorporated and owned entirely by accredited 
investors (as defined in Rule 501(a) under the Securities Act) who are not 
natural persons, estates or trusts.

          (c)   Holder agrees that with respect to the Securities until the 
expiration of the Restricted Period:  (i) Holder, its agents or 
representatives have not and will not solicit offers to buy, offer for sale 
or sell any of the Securities, or any beneficial interest therein in the 
United States or to or for the account of a U.S. Person during the Restricted 
Period; and (ii) that, notwithstanding the foregoing, prior to the expiration 
of the Restricted Period, the Securities may be offered and sold by the 
holder thereof either: (A) if the offer or sale is within the United States 
or to or for the account of a U.S. Person (as such terms are defined in 
Regulation S), the securities are offered and sold pursuant to an effective 
registration statement or pursuant to Rule 144 under the Securities Act or 
pursuant to an exemption from the registration requirements of the Securities 
Act; or (B) the offer and sale is outside the United States and to other than 
a U.S. person.  The foregoing restrictions are binding upon subsequent 
transferees of the Securities, except for transferees pursuant to an 
effective registration statement.  Holder agrees that after the Restricted 
Period, the Securities may be offered or sold within the United States or to 
or for the account of a U.S. Person only pursuant to applicable securities 
laws.

          (d)   Holder has not engaged, nor is it aware that any party has 
engaged, and Holder will not engage or cause any third party to engage in any 
directed selling efforts (as such term is defined in Regulation S) in the 
United States with respect to the Securities.

          (e)   Holder (i) is domiciled and has its principal place of business
outside the United States, (ii) certifies it is not a U.S. Person and is not
acquiring the securities for the account or benefit of any 

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 7


U.S. Person, and (iii) any persons acting on Holder's behalf in connection 
therewith will be located outside the United States.

          (f)   Holder is acquiring the Securities either:  (i) for its own 
account; or (ii) for the account and benefit of clients of whom none is a 
U.S. Person and for whom Holder has, and for the entire Restricted Period 
will continue to have, full investment discretion with respect to the 
purchase, holding and disposition of the Securities.

          (g)   Holder is not a "distributor" (as defined in Regulation S) or 
a "dealer" (as defined in the Securities Act).

          (h)   By reason of Holder's business or financial experience, or 
that of the Holder's professional advisor, Holder has the capacity to protect 
Holder's own interests in connection with the acquisition of the Securities 
and has the ability to bear the economic risk (including the risk of total 
loss) of Holder's investment.

          (i)   Holder further covenants that Holder will not make any sale, 
transfer or other disposition of the Securities in violation of the 
Securities Act, the Securities and Exchange Act of 1934, as amended (the 
"EXCHANGE ACT"), or the rules of the Securities and Exchange Commission 
promulgated under the Securities Act or the Exchange Act.

          (j)   Holder covenants that Holder will sell, transfer or otherwise 
dispose of the Securities only in a manner consistent with such Holder's 
representations and covenants set forth in this Section 7.  In connection 
therewith, Holder acknowledges that, upon issuance of the shares of Common 
Stock of the Company upon conversion of this Note, the Company shall make a 
notation in its stock books regarding the restrictions on transfer set forth 
in this Section 7 and shall transfer such shares on the books of the Company 
only to the extent not inconsistent therewith.

          (k)   Holder acknowledges that Company has given Holder access to 
all documents and other information required for Holder to make an informed 
decision with respect to the acceptance of the Securities.  In this regard, 
Holder acknowledges that it has received and reviewed, among other things, 
the following documents filed by the Company with the Securities and Exchange 
Commission: (i) the Company's Quarterly Report on Form 10-QSB for the 
quarters ended March 31, 1997 and June 30, 1997 and (ii) the Company's Annual 
Report on Form 10-KSB for the year ended December 31, 1996.

     8.   ATTORNEYS' FEES.  If the indebtedness represented by this Note or 
any part thereof is collected in bankruptcy, receivership or other judicial 
proceedings or if this Note is placed in the hands of attorneys for 
collection after default, Company agrees to pay, in addition to the principal 
and interest payable hereunder, reasonable attorneys' fees and costs incurred 
by Holder.

     9.   NOTICES.  Except as otherwise provided herein, all notices 
requests, demands, consents, instructions or other communications to or upon 
the Company or Holder hereunder shall be by telecopy or in writing and 
telecopied, mailed or delivered to each party at telecopier number or its 
address set forth below (or to such other telecopy number or address as the 
recipient of any notice shall have notified the other in writing).  All such 
notices and communications shall be effective (a) when sent by Federal 
Express or other overnight service of recognized standing, on the business 
day following the deposit with such service (if sent 

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 8


to an address in the same country as the sender) or on the third business day 
following the deposit with such service (if sent to an address in a different 
country from the sender); (b) when mailed, by registered or certified mail, 
first class postage prepaid and addressed as aforesaid through the United 
States Postal Service, upon receipt; (c) when delivered by hand, upon 
delivery; and (d) when telecopied, upon confirmation of receipt.

                HOLDER:  (first line address)
                         (2nd line address)
                         (3rd line address)
                         (4th line address)


                COMPANY: Socket Communications, Inc.
                         37400 Central Court
                         Newark, CA 94560
                         Attention:  Chief Financial Officer
                         (415) 744-2700 (telephone)
                         (415) 744-2727 (telecopy)


     10.  ACCELERATION:  This Note shall become immediately due and payable 
(a) upon an Event of Default, (b) if the Company commences any proceeding in 
bankruptcy or for dissolution, liquidation, winding-up, composition or other 
relief under state or federal bankruptcy laws, or (c) if such proceedings are 
commenced against the Company, or a receiver or trustee is appointed for the 
Company or a substantial part of its property, and such proceeding or 
appointment is not dismissed or discharged within sixty (60) days after its 
commencement.

     11.  WAIVERS.  Company hereby waives presentment, demand for 
performance, notice of non-performance, protest, notice of protest and notice 
of dishonor. No delay on the part of Holder in exercising any right hereunder 
shall operate as a waiver of such right or any other right.

     12.  PAYMENT.  Payment shall be made in lawful tender of the United 
States.

     13.  USURY.  In the event any interest is paid on this Note which is 
deemed to be in excess of the then legal maximum rate, then that portion of 
the interest payment representing an amount in excess of the then legal 
maximum rate shall be deemed a payment of principal and applied against the 
principal of this Note.

     14.  GOVERNING LAW.  This Note and all actions arising out of or in 
connection with this Note shall be governed by and construed in accordance 
with the laws of the State of California, without regard to the conflicts of 
law provisions of the State of California or of any other state or country.

     15.  SUCCESSORS AND ASSIGNS.

          (a)   The rights and obligations of the Company and the Holder of 
this Note shall be binding upon and benefit the successors, assigns, heirs, 
administrators and transferees of the parties.

<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated
Convertible Promissory Note
Page 9


          (b)   Holder shall not transfer this Note without the prior written 
consent of Company, except that Holder may transfer the Note without such 
prior written consent to a collection agency following an Event of Default.

          (c)   Neither this Note nor any of the rights, interests or 
obligations hereunder may be assigned, by operation of law or otherwise, in 
whole or in part, by Company without the prior written consent of the Holder 
except in connection with an assignment in whole to a successor corporation 
to Company, provided that such successor corporation acquires all or 
substantially all of Company's property and assets and Holder's rights 
hereunder are not impaired.

                                   SOCKET COMMUNICATIONS, INC.


                                   By: ________________________________

                                   Name: ______________________________

                                   Title: _____________________________


Agreed and Accepted:

HOLDER

By: ________________________________

Name: ______________________________

Title: _____________________________


<PAGE>

                                                                       EXHIBIT G

                         AGREEMENT AND OPTION TO INVEST



     This Agreement and Option to Invest (this "AGREEMENT") is made as of the
___ day of September, 1997 by and among Socket Communications, Inc., a Delaware
corporation ("SOCKET") and the investors listed on Schedule A hereto (the
"INVESTORS").

     WHEREAS, each of the Investors made an investment in Socket pursuant to a
Convertible Subordinated Promissory Note dated February 14, 1997 in the
principal amount set forth opposite such Investor's name on Schedule A hereto
(the "PRIOR INVESTMENT");

     WHEREAS, in connection with this Agreement, Socket and each of the
Investors have agreed to amend and restate the prior Convertible Subordinated
Promissory Note to, among other things, extend the term of such note to August
14, 1998 and reduce the conversion price from $1.00 to $0.50 per share of Socket
Common Stock (as amended and restated, the "AMENDED AND RESTATED NOTE"); and

     WHEREAS, if Socket achieves certain milestones by October 31, 1997 as set
forth on Exhibit A (the "MILESTONES"), each of the Investors desires to make an
additional investment in at least the same amount as the Prior Investment
pursuant to a new Convertible Subordinated Promissory Note on substantially the
terms set forth on the Term Sheet attached hereto as Exhibit B (the "ADDITIONAL
INVESTMENT TERMS").

     NOW, THEREFORE, in consideration of the mutual representations, warranties,
covenants, and agreements set forth herein, the parties hereto hereby agree as
follows:

     Section 1. AGREEMENT TO INVEST.

          (a)   Each of the Investors, severally and not jointly, agrees that,
in the event that Socket achieves the Milestones by October 31, 1997 (the "FINAL
DATE"), such Investor shall make an additional investment (the "ADDITIONAL
INVESTMENT") in Socket in at least the amount of the Prior Investment upon the
terms set forth in the Additional Investment Terms.  In the event that the
Milestones are achieved as aforesaid on or prior to the Final Date, Socket shall
promptly deliver to each Investor written notice (the "MILESTONE NOTICE")
stating that such Milestones have been achieved.  Within five (5) business days
following receipt of the Milestone Notice, (i) each such Investor shall make the
Additional Investment by wire transfer or certified check to Socket in
immediately available funds; and (ii) Socket shall deliver a signed Convertible
Subordinated Promissory Note that incorporates the Additional Investment Terms
(and that shall be in substantially similar form as the Amended and Restated
Note).

          (b)   In the event that an Investor does not make the Additional
Investment upon the completion of the Milestones as aforesaid, the conversion
price of the Amended and Restated Note of such Investor shall thereupon
immediately, and without taking any further action on the part of Socket or such
Investor, revert to a conversion price of $1.00 per share of socket Common
Stock.  Each of the Investors agrees that any conversion of the Amended and
Restated Note at a conversion price of $0.50 per share of Socket Common Stock
prior to the Final Date shall be effective only upon the making of the
Additional Investment, and that any such conversion prior to the Final Date that
is not accompanied or preceded by an Additional Investment shall be at a
conversion price of $1.00 per share of Socket Common Stock.

     Section 2. OPTION TO INVEST.  Notwithstanding whether Socket achieves the
Milestones by or before the Final Date, each Investor shall have an option to
make an additional investment in any amount not to exceed $500,000 in the
aggregate among all such Investors on the Additional Investment Terms.  Such
option shall expire on the fifth business day following the Final Date.  Such
option shall be exercised by 

<PAGE>

Agreement and Option to Invest
Page 2


written notice to Socket, which notice shall state the amount of the 
additional investment that such Investor intends to make and shall be in the 
form attached hereto as Exhibit C.

     Section 3. REPRESENTATIONS AND WARRANTIES OF THE INVESTORS.  Each of the
Investors, severally but not jointly, hereby represents and warrants to the
Company as follows:

          (a)   Investor has been advised and acknowledges:  (i) that the new
Convertible Subordinated Promissory Noted (the "NEW NOTE") to be issued to
Investor under this Agreement, Common Stock of the Company issuable upon
conversion of the New Note (with this Agreement, the option granted hereunder,
the New Note and such Common Stock being hereinafter referred to as the
"SECURITIES") have not been, and when issued, will not be registered under the
Securities Act of 1933, as amended (the "SECURITIES ACT"), the securities laws
of any state of the United States or the securities laws of any other country;
(ii) that in issuing and selling the Securities to Investor pursuant hereto, the
Company is relying upon the "safe harbor" provided by Regulation S and/or on
Section 4(2) under the Securities Act; (iii) that it is a condition to the
availability of the Regulation S safe harbor that the Securities not be offered
or sold in the United States or to a U.S. Person until the expiration of a
period of forty (40) days following the issuance of such Securities; (iv) that,
notwithstanding the foregoing, prior to the expiration of forty (40) days after
the issuance of such Securities (the "RESTRICTED PERIOD"), the Securities may be
offered and sold by the Investor thereof solely either: (A) if the offer or sale
is within the United States or to or for the account of a U.S. Person (as such
terms are defined in Regulation S), the securities are offered and sold pursuant
to an effective registration statement or pursuant to Rule 144 under the
Securities Act or pursuant to an exemption from the registration requirements of
the Securities Act; or (B) the offer and sale is outside the United States and
to other than a U.S. Person.  The foregoing restrictions are binding upon
subsequent transferees of the Securities, except for transferees pursuant to an
effective registration statement.  After the Restricted Period, the Securities
may be offered or sold within the United States or to or for the account of a
U.S. Person only pursuant to applicable securities laws.

          (b)   As used herein, the term "United States" means and includes the
United States of America, its territories and possessions, any State of the
United States, and the District of Columbia, and the term "U.S. Person" (as
defined in Regulation S) means: (i) a natural person (regardless of citizenship)
resident in the United States; (ii) any partnership or corporation organized or
incorporated under the laws of the United States; (iii) any estate or trust of
which any executor, administrator or trustee is a U.S. Person; (iv) any agency
or branch of a foreign entity located in the United States; (v) any
nondiscretionary account or similar account (other than an estate or trust) held
by a dealer or other fiduciary for the benefit or account of a U.S. Person
(whether or not the dealer or other fiduciary is a U.S. Person); (vi) any
discretionary account or similar account (other than an estate or trust) held by
a dealer or other fiduciary organized, incorporated and (if an individual)
resident in the United States; and (vii) a corporation or partnership organized
under the laws of any jurisdiction other than the United States by a U.S. Person
principally for the purpose of investing in securities that have not been
registered under the Securities Act, unless organized or incorporated and owned
entirely by accredited investors (as defined in Rule 501(a) under the Securities
Act) who are not natural persons, estates or trusts.

          (c)   Investor agrees that with respect to the Securities until the
expiration of the Restricted Period: (i) Investor, its agents or representatives
have not and will not solicit offers to buy, offer for sale or sell any of the
Securities, or any beneficial interest therein in the United States or to or for
the account of a U.S. Person during the Restricted Period; and (ii) that,
notwithstanding the foregoing, prior to the expiration of the Restricted Period,
the Securities may be offered and sold by the Investor thereof either: (A) if
the offer or sale is within the United States or to or for the account of a U.S.
Person (as such terms are 

<PAGE>

Agreement and Option to Invest
Page 3


defined in Regulation S), the securities are offered and sold pursuant to an 
effective registration statement or pursuant to Rule 144 under the Securities 
Act or pursuant to an exemption from the registration requirements of the 
Securities Act; or (B) the offer and sale is outside the United States and to 
other than a U.S. Person.  The foregoing restrictions are binding upon 
subsequent transferees of the Securities, except for transferees pursuant to 
an effective registration statement.  Investor agrees that after the 
Restricted Period, the Securities may be offered or sold within the United 
States or to or for the account of a U.S. Person only pursuant to applicable 
securities laws.

          (d)   Investor has not engaged, nor is it aware that any party has
engaged, and Investor will not engage or cause any third party to engage in any
directed selling efforts (as such term is defined in Regulation S) in the United
States with respect to the Securities.

          (e)   Investor (i) is domiciled and has its principal place of
business outside the United States, (ii) certifies it is not a U.S. Person and
is not acquiring the securities for the account or benefit of any U.S. Person,
and (iii) any persons acting on Investor's behalf in connection therewith will
be located outside the United States.

          (f)   Investor is acquiring the Securities either: (i) for its own
account; or (ii) for the account and benefit of clients of whom none is a U.S.
Person and for whom Investor has, and for the entire Restricted Period will
continue to have, full investment discretion with respect to the purchase,
holding and disposition of the Securities.

          (g)   Investor is not a "distributor" (as defined in Regulation S) or
a "dealer" (as defined in the Securities Act).

          (h)   By reason of Investor's business or financial experience, or
that of the Investor's professional advisors, Investor has the capacity to
protect Investor's own interests in connection with the acquisition of the
Securities and has the ability to bear the economic risk (including the risk of
total loss) of Investor's investment.

          (i)   Investor further covenants that Investor will not make any sale,
transfer or other disposition of the Securities in violation of the Securities
Act, the Securities and Exchange Act of 1934, as amended (the "EXCHANGE ACT"),
or the rules of the Securities and Exchange Commission promulgated under the
Securities Act or the Exchange Act.

          (j)   Investor covenants that Investor will sell, transfer or
otherwise dispose of the Securities only in a manner consistent with such
Investor's representations and covenants set forth in this Section 2.  In
connection therewith, Investor acknowledges that, upon issuance of the shares of
Common Stock of the Company upon conversion of the New Note, the Company shall
make a notation in its stock books regarding the restrictions on transfer set
forth in this Section 2 and shall transfer such shares on the books of the
Company only to the extent not inconsistent therewith.

          (k)   Investor acknowledges that Company has given Investor access to
all documents and other information required for Investor to make an informed
decision with respect to the acceptance of the Securities.  In this regard,
Investor acknowledges that it has received and reviewed, among other things, the
following documents filed by the Company with the Securities and Exchange
Commission: (i) the Company's Quarterly Report on Form 10-QSB for the quarters
ended March 31, 1997 and June 30, 1997 and (ii) the Company's Annual Report on
Form 10-KSB for the year ended December 31, 1996.

<PAGE>

Agreement and Option to Invest
Page 4


     Section 4. MISCELLANEOUS.

          (a)   This Agreement shall be governed in all respects by the laws of
the State of California.

          (b)   The provisions hereof shall inure to the benefit of, and be
binding upon, the successors, assigns, heirs, executors and administrators of
the parties hereto, provided, however, that the rights of an Investor hereunder
shall not be assignable without the consent of the Company, which consent shall
not be unreasonably withheld.

          (c)   This Agreement and the other documents delivered pursuant hereto
constitute the full and entire understanding and agreement between the parties
with regard to the subjects hereof and thereof.  Neither this Agreement nor any
term hereof may be amended, waived, discharged or terminated other than by a
written instrument signed by the party against whom enforcement of any such
amendment, waiver, discharge or termination is sought.

          (d)   All notices and other communications required or permitted
hereunder shall be in writing and shall be deemed effectively given upon
delivery to the party to be notified in person or by courier service or five
days after deposit with the United States mail, by registered or certified mail,
postage prepaid, addressed (a) if to an Investor, at such Investor's address set
forth in SCHEDULE A or at such other address as such Investor shall have
furnished to the Company in writing, or (b) if to the Company, one copy should
be sent to its executive offices located at 37400 Central Court, Newark, CA and
addressed to the attention of the Corporate Secretary, or at such other address
as the Company shall have furnished to the Investors.

          (e)   No delay or omission to exercise any right, power or remedy
accruing to the Company, upon any breach or default of any Investor under this
Agreement, shall impair any such right, power or remedy of the Company nor shall
it be construed to be a waiver of any such breach or default, or an acquiescence
therein, or of or in any similar breach or default thereafter occurring; nor
shall any waiver of any single breach of default be deemed a waiver of any other
breach or default therefore or thereafter occurring.  Any waiver, permit,
consent or approval of any kind or character on the part of any holder of any
breach or default under this Agreement, or any waiver on the part of any holder
of any provisions or conditions of this Agreement, must be in writing and shall
be effective only to the extent specifically set forth in such writing.  All
remedies, either under this Agreement or by law or otherwise afforded to the
Company, shall be cumulative and not alternative.

          (f)   This Agreement may be executed in any number of counterparts,
each of which may be executed by less than all of the Investors, each of which
shall be enforceable against the parties actually executing such counterparts,
and all of which together shall constitute one instrument.

          (g)   In the event that any provision of this Agreement becomes or is
declared by a court of competent jurisdiction to be illegal, unenforceable or
void, this Agreement shall continue in full force and effect without said
provision; provided that no such severability shall be effective if it
materially changes the economic benefit of this Agreement to any party.

<PAGE>

Agreement and Option to Invest
Page 5




     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date first written above.

                                        SOCKET COMMUNICATIONS, INC.


                                        By:
                                           ----------------------------------

                                        Name:
                                              -------------------------------

                                        Title:
                                              -------------------------------



<PAGE>

Agreement and Option to Invest
Page 6


                          COUNTERPART SIGNATURE PAGE TO
                         AGREEMENT AND OPTION TO INVEST
                        DATED AS OF SEPTEMBER _____, 1997


"INVESTOR"

If you are an individual, please sign and    Name (Please Print)
print your name to the right
                                              -------------------------------

                                              -------------------------------
                                              Signature

                                              Address:
                                                      -----------------------

                                              -------------------------------

If you are signing on behalf of an entity,    Name of Organization
please print the legal name of the entity 
and sign to the right, indicating your title  -------------------------------

                                              By:
                                                 ----------------------------

                                              Name of Signatory (Please Print)

                                              -------------------------------

                                              -------------------------------
                                              Signature

                                              Title:
                                                    -------------------------

                                              Address:
                                                      -----------------------

                                              -------------------------------

<PAGE>

Agreement and Option to Invest
Page 7



                                   SCHEDULE A
                                    INVESTORS

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------
                                                                      PRIOR
           INVESTOR / ADDRESS                                       INVESTMENT
                                                                      AMOUNT
- ------------------------------------------------------------------------------
<S>                                                                  <C>
 ForetagsByggarna BV                                                  $140,000
 c/o ETS 
 P.O. Box 2804 
 1000 CV Amsterdam, Holland 
- ------------------------------------------------------------------------------
 Fredrik Grunewald                                                    $ 20,000
 Harrviksvagen 21 
 139 40 Varmdo, Sweden 
- ------------------------------------------------------------------------------
 Goran Garberg                                                        $ 15,000
 Skolvagen 7 
 192 70 Sollentuna, Sweden 
- ------------------------------------------------------------------------------
 Jelka Forvaltning AB                                                 $  8,000
 Thulegatan 25 
 852 36 Sundsvall, Sweden 
- ------------------------------------------------------------------------------
 Martin Gemvik                                                        $  6,000
 Gransvagen 6 
 183 30 Taby, Sweden 
- ------------------------------------------------------------------------------
 Bona Utilia AB                                                       $  3,000
 Havstena Gard, PL 2205 
 269 92 Bastad, Sweden 
- ------------------------------------------------------------------------------
 Cambista AB                                                          $  3,000
 Box 10144 
 100 55 Stockholm, Sweden 
- ------------------------------------------------------------------------------
 Sutre Lunden                                                         $  3,000
 Hildur Ottelinsgatan 2A 
 752 31 Uppsala, Sweden 
- ------------------------------------------------------------------------------
 Peter Lonnqvist                                                      $  2,000
 Lutzengatan 9 
 115 20 Stockholm, Sweden 
- ------------------------------------------------------------------------------
 Available for Additional Investment                                  $300,000
- ------------------------------------------------------------------------------
           TOTAL                                                      $500,000
- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------
</TABLE>

<PAGE>

Agreement and Option to Invest
Page 8


                                    EXHIBIT A

                                   MILESTONES


1.   SIGNIFICANT DEVELOPMENT CONTRACTS.  (a) The Development Contract is
     completed with Microsoft Corporation for development and licensing of the
     Kontiki prototypes; and (b) Socket and Cetronic continue the development,
     manufacturing and distribution of the Kontiki product and the development,
     manufacturing and distribution of the PDi Server product.

2.   RECEIPT OF DEVELOPMENT FUNDING.  (a) Payment of $100,000 has been received
     from Microsoft Corporation  in connection with the delivery of Kontiki
     Phase I deliverables (designs and plastic models); and (b) Payment of
     $100,000 has been received from Mitsubishi Corporation in connection with
     funding the Kontiki development program.

3.   COMBINATION PLANNING.  The Combination Agreement has not been terminated by
     either Socket or Cetronic.

4.   SOCKET REVENUES FOR THE THIRD QUARTER.  Net revenues for the quarter ending
     September 30, 1997 are at least $1,400,000.

5.   SOCKET SHARE PRICE.  The average closing common stock price on the OTC
     Bulletin Board during the ten (10) trading days immediately preceding
     October 31, 1997 is not below $0.70 per share.


<PAGE>

Agreement and Option to Invest
Page 9


                                    EXHIBIT B

                           ADDITIONAL INVESTMENT TERMS



     PRINCIPAL AMOUNT              $500,000

     INTEREST RATE                 8% per annum

     MATURITY DATE                 One year from date of issue

     CONVERSION                    Principal and accrued interest will be
                                   convertible into Socket Common Stock on
                                   demand at the rate of $0.50 per share.

     SUBORDINATION                 The New Note shall be subordinated to the
                                   CivicBank of Commerce loan and the World
                                   Trade Finance loan on the same terms as the
                                   prior note.

     EVENTS OF DEFAULT             An Event of Default shall mean the failure to
                                   pay principal or interest when due an failure
                                   to make such payment with five (5) business
                                   days of Company's receipt of Holder's written
                                   notice to Company of such failure to pay.  In
                                   the Event of Default, the Holder shall have
                                   the right to convert outstanding principal
                                   and accrued interest into Common Stock of the
                                   Company at a conversion price equal to the
                                   lower of (i) the Conversion Price or (ii) 75%
                                   of the average closing price of the Company's
                                   Common Stock on the OTC Bulletin Board or
                                   Nasdaq SmallCap Market, as applicable, for
                                   the five (5) business days prior to the date
                                   of the Event of Default.

     OTHER TERMS                   All other terms shall be substantially the
                                   same as the Prior Note.

<PAGE>

Agreement and Option to Invest
Page 10



                                    EXHIBIT C

                                 EXERCISE NOTICE



Socket Communications, Inc.
37400 Central Court
Newark, CA 94560

Attention:  President

     1.   EXERCISE OF OPTION.  The undersigned ("Investor") hereby elects to
exercise Investor's option to invest an additional $____________ in Socket
Communications, Inc. (the "Company") under and pursuant to Section 2 of the
Agreement and Option to Invest dated September ___, 1997 (the "Agreement") by
and among the Company and the investors listed on Schedule A thereto. 
Capitalized terms used but not otherwise defined in this Exercise Notice shall
have the respective meanings given to them in the Agreement.

     2.   REPRESENTATIONS OF OPTIONEE.  Investor represents and warrants to the
Company that:

          (i)      Investor has been advised and acknowledges:  (i) that the
Convertible Subordinated Promissory Note (the "Note") to be issued to Investor
under this Exercise Notice and the Agreement, and the Common Stock of the
Company issuable upon conversion of the Note (with the Note and such Common
Stock being hereinafter referred to as the "Securities") have not been, and when
issued, will not be registered under the Securities Act, the securities laws of
any state of the United States or the securities laws of any other country;
(ii) that in issuing and selling the Securities to Investor pursuant thereto,
the Company is relying upon the "safe harbor" provided by Regulation S and/or on
Section 4(2) under the Securities Act; (iii) that it is a condition to the
availability of the Regulation S safe harbor that the Securities not be offered
or sold in the United States or to a U.S. Person until the expiration of a
period of 40 days following the issuance of such Securities; (iv) that,
notwithstanding the foregoing, prior to the expiration of 40 days after the
issuance of such Securities (the "Restricted Period"), the Securities may be
offered and sold by the Investor thereof solely either:  (A) if the offer or
sale is within the United States or to or for the account of a U.S. Person (as
such terms are defined in Regulation S), the securities ares offered and sold
pursuant to an effective registration statement or pursuant to Rule 144 under
the Securities Act or pursuant to an exemption from the registration
requirements of the Securities Act; or (B) the offer and sale is outside the
United State and to other than a U.S. Person.  The foregoing restrictions are
binding upon subsequent transferees of the Securities, except for transferees
pursuant to an effective registration statement.  After the Restricted Period,
the Securities may be offered or sold within the United States or to or for the
account of a U.S. Person only pursuant to applicable securities laws.

          (ii)     As used herein, the term "United States" means and includes
the United States of America, its territories and possessions, any State of the
United States, and the District of Columbia, and the term "U.S. Person" (as
defined in Regulations S) means: (i) a natural person (regardless of
citizenship) resident in the United States; (ii) any partnership or corporation
organized or incorporated under the laws of the United States; (iii) any estate
or trust of which any executor, administrator or trustee is a U.S. person;
(iv) any agency or branch of a foreign entity located in the United State; (v)
any nondiscretionary account or 


<PAGE>

Agreement and Option to Invest
Page 11


similar account (other than an estate or trust) held by a dealer or other 
fiduciary for the benefit or account of a U.S. Person (whether or not the 
dealer or other fiduciary is a U.S. Person); (vi) any discretionary account 
or similar account (other than an estate or trust) held by a dealer or other 
fiduciary organized, incorporated and (if an individual) resident in the 
United States; and (vii) a corporation or partnership organized under the 
laws of any jurisdiction other than the United States by a U.S. Person 
principally for the purpose of investing in securities that have not been 
registered under the Securities Act, unless organized or incorporated and 
owned entirely by accredited investors (as defined in Rule 501(a) under the 
Securities Act) who are not natural persons, estates or trusts.

          (iii)    Investor agrees that with respect to the Securities until the
expiration of the Restricted Period:  (i) Investor, its agents or
representatives have not and will not solicit offers to buy, offer for sale or
sell any of the Securities, or any beneficial interest therein in the United
States or to or for the account of a U.S. person during the Restricted Period;
and (ii) that, notwithstanding the foregoing, prior to the expiration of the
Restricted Period, the Securities may be offered and sold by the Investor
thereof either: (A) if the offer or sale is within the United States or to or
for the account of a U.S. Person (as such terms are defined in Regulations S),
the securities are offered and sold pursuant to an effective registration
statement or pursuant to Rule 144 under the Securities Act or pursuant to an
exemption from the registration requirements of the Securities Act; or (B) the
offer and sale is outside the United States and to other than a U.S. Person. 
The foregoing restrictions are binding upon subsequent transferees of the
Securities, except for transferees pursuant to an effective registration
statement.  Investor agrees that after the Restricted Period, the Securities may
be offered or sold within the United States or to or for the account of a U.S.
person only pursuant to applicable securities laws.

          (iv)     Investor has not engaged, nor is it aware that any party has
engaged, and Investor will not engage or cause any third party to engage in any
directed selling efforts (as such term is defined in Regulation S) in the United
States with respect to the Securities.

          (v)      Investor (i) is domiciled and has its principal place of
business outside the United States, (ii) certifies it is not a U.S. Person and
is not acquiring the securities for the account or benefit of any U.S. Person,
and (iii) any persons acting on Investor's behalf in connection therewith will
be located outside the United States.

          (vi)     Investor is acquiring the Securities either:  (i) for its own
account; or (ii) for the account and benefit of clients of whom none is a U.S.
Person and for whom Investor has, and for the entire Restricted Period will
continue to have, full investment discretion with respect to the purchase,
holding and disposition of the Securities.

          (vii)    Investor is not a "distributor" (as defined in Regulation S)
or a "dealer" (as defined in the Securities Act).

          (viii)   By reason of Investor's business or financial experience, or
that of the Investor's professional advisor, Investor has the capacity to
protect Investor's own interests in connection with the acquisition of the
Securities and has the ability to bear the economic risk (including the risk of
total loss) of Investor's investment.

          (ix)     Investor further covenants that Investor will not make any
sale, transfer or other disposition of the Securities in violation of the
Securities Act, the Securities and Exchange Act of 1934, as 

<PAGE>

Agreement and Option to Invest
Page 12


amended (the "Exchange Act"), or the rules of the Securities and Exchange 
Commission promulgated under the Securities Act or the Exchange Act.

          (x)      Investor covenants that Investor will sell, transfer or
otherwise dispose of the Securities only in a manner consistent with such
Investor's representations and covenants sets forth in this Section 2.  In
connection therewith, Investor acknowledges that, upon issuance of the shares of
Common Stock of the Company upon conversion of the Note, the company shall make
a notation in its stock books regarding the restrictions on transfer set forth
in this Section 2 and shall transfer such shares on the books of the Company
only to the extent not inconsistent therewith.

          (xi)     Investor acknowledges that Company has given Investor access
to all documents and other information required for Investor to make an informed
decision with respect to the acceptance of the Securities.  In this regard,
Investor acknowledges that it has received and reviewed, among other things, the
following documents filed by the Company with the Securities and Exchange
Commission:  (i) the Company's Quarterly Report on Form 10-QSB for the quarters
ended March 31, 1997 and June 31, 1997 and (ii) the Company's Annual Report on
Form 10-KSB for the year ended December 31, 1996.

     3.   CONVERTIBLE SUBORDINATED PROMISSORY NOTE.  Investor herewith delivers
to the Company a certified check or wire transfer in the amount of the
investment that Optionee has elected make.  Upon receipt of such check or wire
transfer, the Company shall promptly execute and deliver to Investor a
Convertible Subordinated Promissory Note that incorporates the Additional
Investment Terms (and that shall be in substantially similar form as the note
evidencing the Prior Investment).

<PAGE>

Agreement and Option to Invest
Page 13


     4.   ENTIRE AGREEMENT.  The Agreement is incorporated herein by reference. 
This Exercise Notice and Agreement constitute the entire agreement of the
parties and supersede in their entirety all prior undertakings and agreements of
the Company and Investor with respect to the subject matter hereof.  This
Exercise Notice and the Agreement are governed by California law except for that
body of law pertaining to conflict of laws.

Submitted by:                           Accepted by:

INVESTOR:                               Socket Communications, Inc.

                                       By:
- ---------------------------------         -------------------------------

Address:                               Its:
        -------------------------          ------------------------------

        -------------------------

Dated:                                  Dated:
      ----------------------------             ---------------------------

<PAGE>

                                                                       EXHIBIT H

THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH A
VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF.  THE SECURITIES
MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION AND
QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIED LIMITED CIRCUMSTANCES, AN
OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY COUNSEL FOR THE COMPANY, THAT
SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.



                           SOCKET COMMUNICATIONS, INC.

                              AMENDED AND RESTATED
                    SUBORDINATED CONVERTIBLE PROMISSORY NOTED



$300,000                                                      NEWARK, CALIFORNIA
                                                               FEBRUARY 14, 1997

     SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), for
value received, hereby promises to pay to the order of Telenor AS or holder
("HOLDER") in lawful money of the United States at the address of Holder set
forth below, the principal amount of Three Hundred Thousand Dollars $300,000,
together with simple interest at the rate of eight percent (8%) per annum
(calculated on the basis of actual days elapsed and a year of 365 days). 
Accrued interest shall be payable in cash only at the time the Company pays any
portion of the principal amount of this Note.  If this Note is converted
pursuant to Section 4 hereof, accrued interest may be converted as set forth
therein; any accrued interest that is not so converted shall be payable in cash.

     This Note was originally executed on February 14, 1997.  This Note was
amended and restated as of August 14, 1997 to, among other things, extend the
Maturity Date (as defined in Section 1(a) hereof).  The following is a statement
of the rights of Holder and the conditions to which this Note is subject, and to
which the Holder hereof, by the acceptance of this Note, agrees.

     1.   PAYMENTS; PREPAYMENTS

          (a)   All principal, interest and other amounts due hereunder shall be
due and payable on the earlier of (i) August 14, 1998 (the "MATURITY DATE") and
(ii) the day on which this Note becomes immediately due and payable pursuant to
Section 10 hereof.

          (b)   This Note may be prepaid, in whole or in part, from time to time
ten (10) business days after Holder receives written notice of such prepayment
from the Company; Holder shall then have until the end of such ten (10) business
day period to notify the Company in writing that it wishes to convert all or
part of the outstanding principal and accrued interest under this Note into
Common Stock pursuant to Section 4 below.  Prepayments shall be (i) reduced by
any amounts that Holder desires to so convert into Common Stock and then (ii)
applied first to outstanding interest, and then to principal.

          (c)   Upon payment in full of all principal and interest payable
hereunder, this Note shall be surrendered to Company for cancellation.


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 2



     2.   SUBORDINATION

          (a)   "Senior Indebtedness" means (A) the principal of and premium, if
any, and interest on indebtedness of the Company incurred pursuant to the
Promissory Note and Loan Agreement, each dated as of July 5, 1995, between the
Company and CivicBank of Commerce; and (B) all present and future indebtedness,
obligations, liabilities, claims, rights and demands of any kind which may be
now or hereafter owing from the Company to World Trade in connection with that
certain Note in the amount of $500,000 (or such lesser amount as the Company and
World Trade may finally agree) issued by the Company in favor of World Trade and
a related Commercial Security Agreement and Commercial Pledge Agreement between
the Company and World Trade, including, without limitation, all principal, all
interest, all costs and attorneys' fees, all sums paid for the purpose of
protecting World Trade's rights in security (such as paying for insurance on
collateral if the owner fails to do so), and all other obligations of the
Company to World Trade, secured or unsecured, of any nature whatsoever.  The
Company agrees and the holder of this Note, by acceptance thereof, agrees,
expressly for the benefit of the holder of the Senior Indebtedness, that, except
as otherwise provided herein, upon (i) an event of default under the Senior
Indebtedness, or (ii) any dissolution, winding up, or liquidation of the
Company, whether or not in bankruptcy, insolvency or receivership proceedings,
the Company shall not pay, and holder of such Note shall not be entitled to
receive, any amount in respect of the principal and interest of such Note unless
and until the Senior Indebtedness, shall have been paid or otherwise discharged.
Upon (1) an event of default under the Senior Indebtedness, or (2) any
dissolution, winding up or liquidation of the Company, any payment or
distribution of assets of the Company, which the holder of this Note would be
entitled to receive but for the provisions hereof, shall be paid by the
liquidating trustee or agent or other person making such payment or distribution
directly to the holders of the Senior Indebtedness ratably according to the
aggregate amounts remaining unpaid on the Senior Indebtedness after giving
effect to any concurrent payment or distribution to the holders of the Senior
Indebtedness.  Subject to the payment in full of the Senior Indebtedness and
until this Note is paid in full, the holder of this Note shall be subrogated to
the rights of the holders of the Senior Indebtedness (to the extent of payments
or distributions previously made to the holders of the Senior Indebtedness
pursuant to this Section 2(a)) to receive payments or distributions of assets of
the Company applicable to the Senior Indebtedness.

          (b)   This Section 2 is not intended to impair, as between the
Company, its creditors (other than the holders of the Senior Indebtedness) and
the holder of this Note, the unconditional and absolute obligation of the
Company to pay the principal of and interest on the Note or affect the relative
rights of the holder of this Note and the other creditors of the Company, other
than the holders of the Senior Indebtedness.  Nothing in this Note shall prevent
the holder of this Note from exercising all remedies otherwise permitted by
applicable law upon default under the Note, subject to the rights, if any, of
the holders of the Senior Indebtedness in respect to cash, property or
securities of the Company received upon the exercise of any such remedy.

          (c)   This Section 2 is not intended to impair, as between the
Company, its creditors (other than the holders of the Senior Indebtedness) and
the holder of this Note, the unconditional and absolute obligation of the
Company to pay the ;principal of and interest on the Note or affect the relative
rights of the holder of this Note and the other creditors of the Company, other
than the holders of the Senior Indebtedness.  Nothing in this Note shall prevent
the holder of this Note from exercising all remedies otherwise permitted by
applicable law upon default under the Note, subject to the rights, if any, of
the holders of the Senior Indebtedness in respect to cash, property or
securities of the Company received upon the exercise of any such remedy.


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 3



     3.   EVENTS OF DEFAULT

          The Company's failure to pay (i) when due any principal payment on the
due date hereunder or (ii) any interest or other payment required under the
terms of this Note on the date due, and failure to make such payment within five
(5) business days of Company's receipt of Holder's written notice to Company of
such failure to pay, shall constitute an Event of Default.

     4.   CONVERSION

          (a)   In lieu of receiving cash payment for principal amounts and
accrued interest due under this Note, Holder shall have the right to convert
outstanding principal and accrued interest under this Note into Common Stock of
the Company at a conversion price per share equal to $0.50 (the "CONVERSION
PRICE") at any time on or prior to the Maturity Date.

          (b)   In addition to the conversion right provided in Section 4(a)
above, upon an Event of Default, in lieu of receiving cash payment for principal
amounts and accrued interest due under this Note, Holder shall have the right to
convert outstanding principal and accrued interest under this Note into Common
Stock of the Company at a conversion price per share equal to the lower of (i)
the Conversion Price or (ii) 75% of the average closing price of the Company's
Common Stock on the OTC Bulletin Board or Nasdaq Small Cap Market, as
applicable, for five (5) business days prior to the date of the Event of
Default.

          (c)   Holder may exercise its conversion right by providing written
notice to the Company of Holder's intention to exercise its conversion right and
the amount of principal and accrued interest that it wishes to convert (the
"CONVERSION AMOUNT") at least ten (10) days prior to the date on which it wishes
to convert (the "CONVERSION DATE") (unless such notice is given pursuant to the
terms of Section 1(b) above, in which event notice shall comply with the terms
thereof).  No fractional shares of Common Stock shall be issued upon conversion
of this Note.  Promptly after the conversion of this Note, the Holder shall
surrender this Note, duly endorsed, at the principal office of Company.  At its
expense, Company shall, as soon as practicable thereafter (or as otherwise noted
in the provisions above), issue and deliver to such Holder at such principal
office a certificate or certificates for the number of shares of such Common
Stock to which the Holder shall be entitled upon such conversion (bearing such
legends as are required by applicable state and federal securities laws in the
opinion of counsel to Company).  In addition, unless this Note has been fully
converted, a new Note representing the principal amount that shall not have been
converted into Common Stock shall also be issued to Holder as soon as possible
thereafter.  Upon conversion of this Note in full, Company shall be forever
released from all its obligations and liabilities under this Note including
principal, interest and any other amounts due and owing pursuant hereto.  Any
notice from the Holder of an election to convert by the Company shall be
irrevocable.

          (d)   If at any time the number of authorized but unissued shares of
Common Stock shall not be sufficient to effect the conversion of the entire
outstanding principal amount and accrued interest under this Note, Company will
use its best efforts to take such corporate action as may be necessary, in the
opinion of its counsel, to increase its authorized but unissued shares of Common
Stock to such number of shares as shall be sufficient for such purposes.


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 4



     5.   REGISTRATION RIGHT.

          (a)   Following the Conversion Date, and within a reasonable amount of
time following the conversion by Holder of any outstanding principal and accrued
interest under this Note into Common Stock of the Company, the Company will use
best efforts to (i) file a registration statement under the Securities Act of
1933, as amended (the "SECURITIES ACT") registering such shares for resale to
the public, (ii) have such registration statement declared effective by the
Securities and Exchange Commission, (iii) register and qualify the securities
covered by such registration statement under the Blue Sky laws of such
jurisdictions as shall be reasonably requested by the Holder (provided that the
Company shall not be required in connection therewith or as a condition thereto
to qualify to do business or to file a general consent to service of process in
any such states or jurisdictions, unless the Company is already subject to
service in such jurisdiction and except as may be required by the Securities
Act), (iv) cause all securities registered pursuant hereunder to be listed on
each securities exchange on which similar securities issued by the Company are
then listed, and (v) file updates to such registration statement as necessary to
keep it effective until the date that all remaining such shares may be sold to
the public without registration within a period of ninety (90) days; PROVIDED
THAT, the Company may suspend such registration for up to two periods of not
more than ninety (90) days each in any 12-month period if necessary (x) to
enable the Company to update the registration statement or (y) to undertake
another sale of securities.

          (b)   All Registration Expenses (as hereafter defined) incurred in
connection with any registration pursuant to this Section 5 shall be borne by
the Company.  "Registration Expenses" shall mean all expenses incurred by the
Company in complying with this Section 5, including, without limitation, all
registration, qualification and filing fees, printing expenses, fees and
disbursements of counsel for the Company, the reasonable costs of one special
legal counsel to represent Holder in any such registration and blue sky fees and
expenses.  "Registration Expenses" shall not include (if applicable) any
underwriting discounts or selling commissions.

          (c)   INDEMNIFICATION.

                (i)      The Company will indemnify the Holder, each of its
officers and directors and partners, and each person controlling such Holder
within the meaning of Section 15 of the Securities Act, with respect to which
registration, qualification or compliance has been effected pursuant to this
Section 5, against all expenses, claims, losses, damages or liabilities (or
actions in respect thereof), including any of the foregoing incurred in
settlement of any litigation, commenced or threatened, arising out of or based
on any untrue statement (or alleged untrue statement) of a material fact
contained in any registration statement, prospectus, preliminary prospectus,
offering circular or other document, or any amendment or supplement thereto,
incident to any such registration, qualification or compliance, or based on any
omission (or alleged omission) to state therein a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances in which they were made, not misleading, or any violation or any
alleged violation by the Company of any rule or regulation promulgated under the
Securities Act or the Exchange Act or any state securities law applicable to the
Company in connection with any such registration, qualification or compliance,
and the Company will reimburse each such Holder, each of its officers and
directors, and each person controlling such Holder, for any legal and any other
expenses reasonably incurred in connection with investigating, preparing or
defending any such claim, loss, damage, liability or action, as such expenses
are incurred, provided that the Company will not be liable in any such case to
the extent that any such claim, loss, damage, liability or expense arises out of
or is based on any 


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 5



untrue statement or omission or alleged untrue statement or omission, made in 
reliance upon and in conformity with written information furnished to the 
Company by an instrument duly executed by such Holder or controlling person 
and stated to be specifically for use therein.

                (ii)     The Holder will indemnify the Company, each of its
directors and officers, and each person who controls the Company within the
meaning of Section 15 of the Securities Act against all claims, losses, damages
and liabilities (or actions in respect thereof) arising out of or based on any
untrue statement (or alleged untrue statement) of a material fact contained in
any such registration statement, prospectus, offering circular or other
document, or any omission (or alleged omission) to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, and will reimburse the Company, such directors, officers or control
persons for any legal or any other expenses reasonably incurred in connection
with investigating or defending any such claim, loss, damage, liability or
action, as such expenses are incurred, in each case to the extent, but only to
the extent, that such untrue statement (or alleged untrue statement) or omission
(or alleged omission) is made in such registration statement, prospectus,
offering circular or other document in reliance upon and in conformity with
written information furnished to the Company by an instrument duly executed by
such Holder and stated to be specifically for use therein.

     6.   RIGHT OF PARTICIPATION.  Upon the first (and only the first) offering
(or series of related offerings in any 90-day period) by the Company subsequent
to the date hereof of any shares of, or securities convertible into or
exercisable for any shares of, any class of its capital stock ("SECURITIES"),
the Company shall offer to the Holder and each of its affiliates that holds a
Subordinated Convertible Promissory Note issued by the Company (collectively,
the "AFFILIATED HOLDERS") the option to purchase up to an aggregate of Two
Million Dollars ($2,000,000) worth of the offered Securities not to exceed 50%
of the offering (the "AFFILIATED HOLDER MAXIMUM"), in accordance with the
following provisions:

          (a)   The Company shall deliver a notice to the Holder stating (i) its
bona fide intention to offer such Securities, (ii) the number of such Securities
to be offered, (iii) the price, if any, for which it proposes to offer such
Securities, and (iv) the terms of such offer.  The Holder will distribute this
notice to the other Affiliated Holders, and the Affiliated Holders will
apportion the Affiliated Holder Maximum amongst themselves as they see fit.

          (b)   Within fifteen (15) calendar days after receipt of the Notice,
the Holder will notify the Company of the portion of the Affiliated Holder
Maximum that the Affiliated Holders wish to purchase, along with a detailed list
of the apportionment of such Affiliated Holder Maximum amongst the Affiliated
Holders.

          (c)   The right of participation in this Section 6 shall not be
applicable (i) to the issuance or sale of shares of capital stock (or options
therefor) to employees, officers, directors or consultants for the primary
purpose of soliciting or retaining their services, (ii) to the issuance or sale
of the Company's securities to leasing entities or financial institutions in
connection with commercial leasing or borrowing transactions, or (iii) to
conversions of convertible securities.


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 6



     7.   REPRESENTATIONS AND WARRANTIES OF HOLDER.  By its acceptance hereof,
Holder represents and warrants to Company that:

          (a)   Holder has been advised that this Note and the Common Stock of
the Company issuable upon conversion of the Note (with the Note and such Common
Stock being hereinafter collectively referred to as the "SECURITIES") have not
been, and when issued, will not be registered under the Securities Act, the
securities laws of any state of the United States or the securities laws of any
other country; (ii) that in issuing and selling the Securities to Holder
pursuant hereto, the Company is relying upon the "safe harbor" provided by
Regulations S and/or on Section 4(2) under the Securities Act; (iii) that it is
a condition to the availability of the Regulation S safe harbor that the
Securities not be offered or sold in the United States or to a U.S. Person until
the expiration of a period of forty (40) days following the issuance of such
Securities; (iv) that, notwithstanding the foregoing, prior to the expiration of
forty (40) days after the issuance of such Securities (the "RESTRICTED PERIOD"),
the Securities may be offered and sold by the holder thereof solely either: 
(A) if the offer or sale is within the United States or to or for the Account of
a U.S. Person (as such terms are defined in Regulation S), the securities are
offered and sold pursuant to an effective registration statement or pursuant to
Rule 144 under the Securities Act or pursuant to an exemption from the
registration requirements of the Securities Act; or (B) the offer and sale is
outside the United States and to other than a U.S. Person.  The foregoing
restrictions are binding upon subsequent transferees of the Securities, except
for transferees pursuant to an effective registration statement.  After the
Restricted Period, the Securities may be offered or sold within the United
States or to or for the account of a U.S. Person only pursuant to applicable
securities laws.

          (b)   As used herein, the term "United States" means and includes the
United States of America, its territories and possessions, any State of the
United States, and the District of Columbia, and the term "U.S. Person" (as
defined in Regulation S) means:  (i) a natural person (regardless of
citizenship) resident in the United States; (ii) any partnership or corporation
organized or incorporated under the laws of the United States; (iii) any estate
or trust of which any executor, administrator or trustee is a U.S. Person;
(iv) any agency or branch of a foreign entity located in the United States;
(v) any nondiscretionary account or similar account (other than an estate or
trust) held by a dealer or other fiduciary for the benefit or account of a U.S.
Person (whether or not the dealer or other fiduciary is a U.S. Person); (vi) any
discretionary account or similar account (other than an estate or trust) held by
a dealer or other fiduciary organized, incorporated and (if an individual)
resident in the United States; and (vii) a corporation or partnership organized
under the laws of any jurisdiction other than the United States by a U.S. Person
principally for the purpose of investing in securities that have not been
registered under the Securities Act, unless organized or incorporated and owned
entirely by accredited investors (as defined in Rule 501(a) under the Securities
Act) who are not natural persons, estates or trusts.

          (c)   Holder agrees that with respect to the Securities until the
expiration of the Restricted Period:  (i) Holder, its agents or representatives
have not and will not solicit offers to buy, offer for sale or sell any of the
Securities, or any beneficial interest therein in the United States or to or for
the account of a U.S. Person during the Restricted Period; and (ii) that,
notwithstanding the foregoing, prior to the expiration of the Restricted Period,
the Securities may be offered and sold by the holder thereof either: (A) if the
offer or sale is within the United States or to or for the account of a U.S.
Person (as such terms are defined in Regulation S), the securities are offered
and sold pursuant to an effective registration statement or pursuant to Rule 144
under the Securities Act or pursuant to an exemption from the registration
requirements of the Securities Act; or (B) the offer and sale is outside the
United States and to other than a U.S. Person.  The 


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 7



foregoing restrictions are binding upon subsequent transferees of the 
Securities, except for transferees pursuant to an effective registration 
statement.  Holder agrees that after the Restricted Period, the Securities 
may be offered or sold within the United States or to or for the account of a 
U.S. Person only pursuant to applicable securities laws.

          (d)   Holder has not engaged, nor is it aware that any party has
engaged, and Holder will not engage or cause any third party to engage in any
directed selling efforts (as such term is defined in Regulation S) in the United
States with respect to the Securities.

          (e)   Holder (i) is domiciled and has its principal place of business
outside the United States, (ii) certifies it is not a U.S. Person and is not
acquiring the securities for the account or benefit of any U.S. Person, and
(iii) any persons acting on Holder's behalf in connection therewith will be
located outside the United States.

          (f)   Holder is acquiring the Securities either:  (i) for its own
account; or (ii) for the account and benefit of clients of whom none is a U.S.
Person and for whom Holder has, and for the entire Restricted Period will
continue to have, full investment discretion with respect to the purchase,
holding and disposition of the Securities.

          (g)   Holder is not a "distributor" (as defined in Regulation S) or a
"dealer" (as defined in the Securities Act).

          (h)   By reason of Holder's business or financial experience, or that
of the Holder's professional advisor, Holder has the capacity to protect
Holder's own interests in connection with the acquisition of the Securities and
has the ability to bear the economic risk (including the risk of total loss) of
Holder's investment.

          (i)   Holder further covenants that Holder will not make any sale,
transfer or other disposition of the Securities in violation of the Securities
Act, the Securities and Exchange Act of 1934, as amended (the "EXCHANGE ACT"),
or the rules of the Securities and Exchange Commission promulgated under the
Securities Act or the Exchange Act.

          (j)   Holder covenants that Holder will sell, transfer or otherwise
dispose of the Securities only in a manner consistent with such Holder's
representations and covenants set forth in this Section 7.  In connection
therewith, Holder acknowledges that, upon issuance of the shares of Common Stock
of the Company upon conversion of this Note, the Company shall make a notation
in its stock books regarding the restrictions on transfer set forth in this
Section 7 and shall transfer such shares on the books of the Company only to the
extent not inconsistent therewith.

          (k)   Holder acknowledges that Company has given Holder access to all
documents and other information required for Holder to make an informed decision
with respect to the acceptance of the Securities.  In this regard, Holder
acknowledges that it has received and reviewed, among other things, the
following documents filed by the Company with the Securities and Exchange
Commission: (i) the Company's Quarterly Report on Form 10-QSB for the quarters
ended March 31, 1997 and June 30, 1997 and (ii) the Company's Annual Report on
Form 10-KSB for the year ended December 31, 1996.


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 8



     8.   ATTORNEYS' FEES.  If the indebtedness represented by this Note or any
part thereof is collected in bankruptcy, receivership or other judicial
proceedings or if this Note is placed in the hands of attorneys for collection
after default, Company agrees to pay, in addition to the principal and interest
payable hereunder, reasonable attorneys' fees and costs incurred by Holder.

     9.   NOTICES.  Except as otherwise provided herein, all notices requests,
demands, consents, instructions or other communications to or upon the Company
or Holder hereunder shall be by telecopy or in writing and telecopied, mailed or
delivered to each party at telecopier number or its address set forth below (or
to such other telecopy number or address as the recipient of any notice shall
have notified the other in writing).  All such notices and communications shall
be effective (a) when sent by Federal Express or other overnight service of
recognized standing, on the business day following the deposit with such service
(if sent to an address in the same country as the sender) or on the third
business day following the deposit with such service (if sent to an address in a
different country from the sender); (b) when mailed, by registered or certified
mail, first class postage prepaid and addressed as aforesaid through the United
States Postal Service, upon receipt; (c) when delivered by hand, upon delivery;
and (d) when telecopied, upon confirmation of receipt.

                HOLDER:           Telenor Venture AS
                                  P.O. Box 6701
                                  St. Olavs Plass
                                  N-0130 Oslo, Norway

                COMPANY:          Socket Communications, Inc.
                                  37400 Central Court
                                  Newark, CA 94560
                                  Attention:  Chief Financial Officer
                                  (415) 744-2700 (telephone)
                                  (415) 744-2727 (telecopy)


     10.  ACCELERATION:  This Note shall become immediately due and payable
(a) upon an Event of Default, (b) if the Company commences any proceeding in
bankruptcy or for dissolution, liquidation, winding-up, composition or other
relief under state or federal bankruptcy laws, or (c) if such proceedings are
commenced against the Company, or a receiver or trustee is appointed for the
Company or a substantial part of its property, and such proceeding or
appointment is not dismissed or discharged within 60 days after its
commencement.

     11.  WAIVERS.  Company hereby waives presentment, demand for performance,
notice of non-performance, protest, notice of protest and notice of dishonor. 
No delay on the part of Holder in exercising any right hereunder shall operate
as a waiver of such right or any other right.

     12.  PAYMENT.  Payment shall be made in lawful tender of the United States.

     13.  USURY.  In the event any interest is paid on this Note which is deemed
to be in excess of the then legal maximum rate, then that portion of the
interest payment representing an amount in excess of the 


<PAGE>

Socket Communications, Inc.
Amended and Restated Subordinated 
Convertible Promissory Note
Page 9



then legal maximum rate shall be deemed a payment of principal and applied 
against the principal of this Note.

     14.  GOVERNING LAW.  This Note and all actions arising out of or in
connection with this Note shall be governed by and construed in accordance with
the laws of the State of California, without regard to the conflicts of law
provisions of the State of California or of any other state or country.

     15.  SUCCESSORS AND ASSIGNS.

          (a)   The rights and obligations of the Company and the Holder of this
Note shall be binding upon and benefit the successors, assigns, heirs,
administrators and transferees of the parties.

          (b)   Holder shall not transfer this Note without the prior written
consent of Company, except that Holder may transfer the Note without such prior
written consent to a collection agency following an Event of Default.

          (c)   Neither this Note nor any of the rights, interests or
obligations hereunder may be assigned, by operation of law or otherwise, in
whole or in part, by Company without the prior written consent of the Holder
except in connection with an assignment in whole to a successor corporation to
Company, provided that such successor corporation acquires all or substantially
all of Company's property and assets and Holder's rights hereunder are not
impaired.

                                       SOCKET COMMUNICATIONS, INC.


                                       By: 
                                           ------------------------------------

                                       Name: 
                                             ----------------------------------

                                       Title: 
                                              ---------------------------------

Agreed and Accepted:

TELENOR VENTURE AS

By: 
    --------------------------

Name: 
      ------------------------

Title: 
       -----------------------



<PAGE>

                                                                       EXHIBIT I


THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER 
THE SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE 
SECURITIES LAWS AND HAVE BEEN TAKEN FOR INVESTMENT PURPOSES ONLY AND NOT WITH 
A VIEW TO OR FOR SALE IN CONNECTION WITH ANY DISTRIBUTION THEREOF.  THE 
SECURITIES MAY NOT BE SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH 
REGISTRATION AND QUALIFICATION WITHOUT, EXCEPT UNDER CERTAIN SPECIFIC LIMITED 
CIRCUMSTANCES, AN OPINION OF COUNSEL FOR THE HOLDER, CONCURRED IN BY COUNSEL 
FOR THE COMPANY, THAT SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.

                           SOCKET COMMUNICATIONS, INC.

                    SUBORDINATED CONVERTIBLE PROMISSORY NOTE

                                                              Newark, California
$________                                                     __________________

     SOCKET COMMUNICATIONS, INC., a Delaware corporation (the "COMPANY"), for 
value received, hereby promises to pay to the order of ___________________ or 
holder ("HOLDER") in lawful money of the United States at the address of 
Holder set forth below, the principal amount of _____________________ 
($_________), together with simple interest at the rate of eight percent (8%) 
per annum (calculated on the basis of actual days elapsed and a year of 365 
days). Accrued interest shall be payable in cash only at the time the Company 
pays any portion of the principal amount of this Note.  If this Note is 
converted pursuant to Section 4 hereof, accrued interest may be converted as 
set forth therein; any accrued interest that is not so converted shall be 
payable in cash.

     The following is a statement of the rights of Holder and the conditions 
to which this Note is subject, and to which the Holder hereof, by the 
acceptance of this Note, agrees.

1.   PAYMENTS; PREPAYMENTS.

     (a)  All principal, interest and other amounts due hereunder shall be 
due and payable on the earlier of (i) December 12, 1998 (the "MATURITY DATE") 
and (ii) the day on which this Note becomes immediately due and payable 
pursuant to Section 10 hereof.

     (b)  This Note may be prepaid, in whole or in part, from time to time 
ten (10) business days after Holder receives written notice of such 
prepayment from the Company; Holder shall then have until the end of such ten 
(10) business day period to notify the Company in writing that it wishes to 
convert all or part of the outstanding principal and accrued interest under 
this Note into Common Stock pursuant to Section 4 below.  Prepayments shall 
be (i) reduced by any amounts that Holder desires to so convert into Common 
Stock and then (ii) applied first to outstanding interest, and then to 
principal.

     (c)  upon payment in full of all principal and interest payable 
hereunder, this Note shall be surrendered to Company for cancellation.

2.   SUBORDINATION

     (a)  "Senior Indebtedness" means (A) the principal of and premium, if any,
and interest on indebtedness of the Company incurred pursuant to the Promissory
Note and Loan Agreement, each dated as 

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 2


of July 5, 1995, between the Company and CivicBank of Commerce; and (B) all 
present and future indebtedness, obligations, liabilities, claims, rights and 
demands of any kind which may be now or hereafter owing from the company to 
World Trade in connection with that certain Note in the amount of $500,000 
(or such lesser amount as the Company and World Trade may finally agree) 
issued by the Company in favor of World Trade and a related Commercial 
Security Agreement and Commercial Pledge Agreement between the Company and 
World Trade, including, without limitation, all principal, all interest, all 
costs and attorneys' fees, all sums paid for the purpose of protecting World 
Trade's rights in security (such as paying for insurance on collateral if the 
owner fails to do so), and all other obligations of the Company to World 
Trade, secured or unsecured, of any nature whatsoever.  The Company agrees 
and the Holder of this Note, by acceptance thereof, agrees, expressly for the 
benefit of the holder of the Senior Indebtedness, that, except as otherwise 
provided herein, upon (i) an event of default under the Senior Indebtedness, 
or (ii) any dissolution, winding up, or liquidation of the Company, whether 
or not in bankruptcy, insolvency or receivership proceedings, the Company 
shall not pay, and the holder of such Note shall not be entitled to receive, 
any amount in respect of the principal and interest of such Note unless and 
until the Senior Indebtedness shall have been paid or otherwise discharged. 
Upon (1) an event of default under the Senior Indebtedness, or (2) any 
dissolution, winding up or liquidation of the Company, any payment or 
distribution of assets of the Company, which the holder of this Note would be 
entitled to receive but for the provisions hereof, shall be paid by the 
liquidating trustee or agent or other person making such payment or 
distribution directly to the holder of the Senior Indebtedness ratably 
according to the aggregate amounts remaining unpaid on the Senior 
Indebtedness after giving effect to any concurrent payment or distribution to 
the holder of the Senior Indebtedness.  Subject to the payment in full of the 
Senior Indebtedness and until this Note is paid in full, the holder of this 
Note shall be subrogated to the rights of the holders of the Senior 
Indebtedness (to the extent of payments of distributions previously made to 
the holder of the Senior Indebtedness pursuant to this Section 2(a)) to 
receive payments or distributions of assets of the Company applicable to the 
Senior Indebtedness.

     (b)  This Section 2 is not intended to impair, as between the Company, 
its creditors (other than the holders of the Senior Indebtedness) and the 
holder of this Note, the unconditional and absolute obligation of the Company 
to pay the principal of and interest on the Note or affect the relative 
rights of the holder of this Note and the other creditors os the Company, 
other than the holder of the Senior Indebtedness.  Nothing in this Note shall 
prevent the holder of this Note from exercising all remedies otherwise 
permitted by applicable law upon default under the Note, subject to the 
rights, if any, of the holder of the Senior Indebtedness in respect to cash, 
property or securities of the Company received upon the exercise of any such 
remedy.

3.   EVENTS OF DEFAULT.  The Company's failure to pay (i) when due any 
principal payment on the due date hereunder or (ii) any interest or other 
payment required under the terms of this Note on the date due, and failure to 
make such payment within five (5) business days of Company's receipt of 
Holder's written notice to Company of such failure to pay, shall constitute 
an Event of Default.

4.   CONVERSION.

     (a)  In lieu of receiving cash payment for principal amounts and accrued 
interest due under this Note, Holder shall have the right to convert 
outstanding principal and accrued interest under this Note into Common Stock 
of the Company at a conversion price per share equal to $0.50 (the 
"CONVERSION PRICE") at any time on or prior to the Maturity Date, subject to 
the provisions of Section 2 of that certain Agreement and Option to Invest of 
even date herewith between the Company and Holder.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 3


     (b)  In addition to the conversion right provided in Section 4(a) above, 
upon an Event of Default, in lieu of receiving cash payment for principal 
amounts and accrued interest due under this Note, Holder shall have the right 
to convert outstanding principal and accrued interest under this Note into 
Common Stock of the Company at a conversion price per share equal to the 
lower of (i) the Conversion Price or (ii) 75% of the average closing price of 
the Company's Common Stock on the OTC Bulletin Board or Nasdaq SmallCap 
market, as applicable, for the five (5) business days prior to the date of 
the Event of Default.

     (c)  Holder may exercise its conversion right by providing written 
notice to the Company of Holder's intention to exercise its conversion right 
and the amount of principal and accrued interest that it wishes to convert 
(the "CONVERSION AMOUNT") at least ten (10) days prior to the date on which 
it wishes to convert (the "CONVERSION DATE") (unless such notice is given 
pursuant to the terms of Section 1(b) above, in which event notice shall 
comply with the terms thereof).  No fractional shares of Common Stock shall 
be issued upon conversion of this Note.  Promptly after the conversion of 
this Note, the Holder shall surrender this Note, duly endorsed, at the 
principal office of Company.  At its expense, Company shall, as soon as 
practicable thereafter (or as otherwise noted in the provisions above), issue 
and deliver to such Holder at such principal office a certificate or 
certificates for the number of shares of such Common Stock to which the 
Holder shall be entitled upon such conversion (bearing such legends as are 
required by applicable state and federal securities laws in the opinion of 
counsel to Company).  In addition, unless this Note has been fully converted, 
a new Note representing the principal amount that shall not have been 
converted into Common Stock shall also be issued to Holder as soon as 
possible thereafter.  Upon conversion of this Note in full, Company shall be 
forever released from all its obligations and liabilities under this Note 
including principal, interest and any other amounts due and owing pursuant 
hereto.  Any notice from the Holder of an election to convert by the Company 
shall be irrevocable.

     (d)  If at any time the number of authorized but unissued shares of 
Common Stock shall not be sufficient to effect the conversion of the entire 
outstanding principal amount and accrued interest under this Note, Company 
will use its best efforts to take such corporate action as may be necessary, 
in the opinion of its counsel, to increase its authorized but unissued shares 
of Common Stock to such number of shares as shall be sufficient for such 
purposes.

5.   REGISTRATION RIGHT.

     (a)  Following the Maturity Date, and within a reasonable amount of time 
following the conversion by Holder of any outstanding principal and accrued 
interest under this Note into Common Stock of the Company, the Company will 
use reasonable efforts to (i) file a registration statement under the 
Securities Act of 1933, as amended (the "SECURITIES ACT") registering such 
shares for resale to the public, (ii) have such registration statement 
declared effective by the Securities and Exchange Commission, (iii) register 
and qualify the securities covered by such registration statement under the 
Blue Sky laws of such jurisdictions as shall be reasonably requested by the 
Holder (provided that the Company shall not be required in connection 
therewith or as a condition thereto to qualify to do business or to file a 
general consent to service of process in any such states or jurisdictions, 
unless the Company is already subject to service in such jurisdiction and 
except as may be required by the Securities Act), (iv) cause all securities 
registered pursuant hereunder to be listed on each securities exchange on 
which similar securities issued by the Company are then listed, and (v) file 
updates to such registration statement as necessary to keep it effective 
until the date that all remaining such shares may be sold to the public 
without registration within a period of 90 days; PROVIDED THAT, the Company 
may suspend such registration for up to two periods of not more than 90 days 
each in any 

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 4


12-month period if necessary (x) to enable the Company to update the 
registration statement or (y) to undertake another sale of securities.

     (b)  All Registration Expenses (as hereafter defined) incurred in 
connection with any registration pursuant to this Section 5 shall be borne by 
the Company.  "Registration Expenses" shall mean all expenses incurred by the 
Company in complying with this Section 5, including, without limitation, all 
registration, qualification and filing fees, printing expenses, fees and 
disbursements of counsel for the Company, the reasonable costs of one special 
legal counsel to represent Holder in any such registration, and blue sky fees 
and expenses.  "Registration Expenses" shall not include (if applicable) any 
underwriting discounts or selling commissions.

     (c)  INDEMNIFICATION.

          (i)   The Company will indemnify the Holder, each of its officers 
and directors and partners, and each person controlling such Holder within 
the meaning of Section 15 of the Securities Act, with respect to which 
registration, qualification or compliance has been effected pursuant to this 
Section 5, against all expenses, claims, losses, damages or liabilities (or 
actions in respect thereof), including any of the foregoing incurred in 
settlement of any litigation, commenced or threatened, arising out of or 
based on any untrue statement (or alleged untrue statement) of a material 
fact contained in any registration statement, prospectus, preliminary 
prospectus, offering circular or other document, or any amendment or 
supplement thereto, incident to any such registration, qualification or 
compliance, or based on any omission (or alleged omission) to state therein a 
material fact required to be stated therein or necessary to make the 
statements therein, in light of the circumstances in which they were made, 
not misleading, or any violation or any alleged violation by the Company of 
any rule or regulation promulgated under the Securities Act or the Exchange 
Act or any state securities law applicable to the Company in connection with 
any such registration, qualification or compliance, and the Company will 
reimburse each such Holder, each of its officers and directors, and each 
person controlling such Holder, for any legal and any other expenses 
reasonably incurred in connection with investigating, preparing or defending 
any such claim, loss, damage, liability or action, as such expenses are 
incurred, provided that the Company will not be liable in any such case to 
the extent that any such claim, loss, damage, liability or expense arises out 
of or is based on any untrue statement or omission or alleged untrue 
statement or omission, made in reliance upon and in conformity with written 
information furnished to the Company by an instrument duly executed by such 
Holder or controlling person and stated to be specifically for use therein.

     (ii) The Holder will indemnify the Company, each of its directors and 
officers, and each person who controls the Company within the meaning of 
Section 15 of the Securities Act against all claims, losses, damages and 
liabilities (or actions in respect thereof) arising out of or based on any 
untrue statement (or alleged untrue statement) of a material fact contained 
in any such registration statement, prospectus, offering circular or other 
document, or any omission (or alleged omission) to state therein a material 
fact required to be stated therein or necessary to make the statements 
therein not misleading, and will reimburse the Company, such directors, 
officers or control persons for any legal or any other expenses reasonably 
incurred in connection with investigating or defending any such claim, loss, 
damage, liability or action, as such expenses are incurred, in each case to 
the extent, but only to the extent, that such untrue statement (or alleged 
untrue statement) or omission (or alleged omission) is made in such 
registration statement, prospectus, offering circular or other document in 
reliance upon and in conformity with written information furnished to the 
Company by an instrument duly executed by such Holder and stated to be 
specifically for use therein.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 5


6.   RIGHT OF PARTICIPATION.  Upon the first (and only the first) offering 
(or series of related offerings in any 90-day period) by the Company 
subsequent to the date hereof of any shares of, or securities convertible 
into or exercisable for any shares of, any class of its capital stock 
("SECURITIES"), the Company shall offer to the Holder and each of its 
affiliates that holds a Subordinated Convertible Promissory Note issued by 
the Company (collectively, the "AFFILIATED HOLDERS") the option to purchase 
up to an aggregate of $2,000,000 worth of the offered Securities not to 
exceed 50% of the offering (the "AFFILIATED HOLDER MAXIMUM"), in accordance 
with the following provisions:

     (a)  The company shall deliver a notice to the Holder stating (i) its 
bona fide intention to offer such Securities, (ii) the number of such 
Securities to be offered, (iii) the price, if any, for which it proposes to 
offer such Securities, and (iv) the terms of such offer.  The Holder will 
distribute this notice to the other Affiliated Holders, and the Affiliated 
Holders will apportion the Affiliated Holder Maximum amongst themselves as 
they see fit.

     (b)  Within fifteen (15) calendar days after receipt of the Notice, the 
Holder will notify the Company of the portion of the Affiliated Holder 
Maximum that the Affiliated Holders wish to purchase, along with a detailed 
list of the apportionment of such Affiliated Holder maximum amongst the 
Affiliated Holders.

     (c)  The right of participation in this Section 6 shall not be 
applicable (i) to the issuance or sale of shares of capital stock (or options 
therefor) to employees, officers, directors or consultants for the primary 
purpose of soliciting or retaining their services, (ii) to the issuance or 
sale of the Company's securities to leasing entities or financial 
institutions in connection with commercial leasing or borrowing transactions, 
or (iii) to conversions of convertible securities.

7.   REPRESENTATIONS AND WARRANTIES OF HOLDER.  By its acceptance hereof, 
Holder represents and warrants to Company that:

     (a)  Holder has been advised and acknowledges: (i) that this Note and 
the Common Stock of the Company issuable upon conversion of the Note (with 
the Note and such Common Stock being hereinafter referred to as the 
"SECURITIES") have not been, and when issued, will not be registered under 
the Securities Act, the securities laws of any state of the United States or 
the securities laws of any other country; (ii) that in issuing and selling 
the Securities to Holder pursuant hereto, the Company is relying upon the 
"safe harbor" provided by Regulation S and/or on Section 4(2) under the 
Securities Act; (iii) that it is a condition to the availability of the 
Regulation S safe harbor that the Securities not be offered or sold in the 
United States or to a U.S. Person until the expiration of a period of 40 days 
following the issuance of such Securities; (iv) that, notwithstanding the 
foregoing, prior to the expiration of 40 days after the issuance of such 
Securities (the "RESTRICTED PERIOD"), the Securities may be offered and sold 
by the holder thereof solely either: (A) if the offer or sale is within the 
United States or to or for the account of a U.S. Person (as such terms are 
defined in Regulation S), the securities are offered and sold pursuant to an 
effective registration statement or pursuant to Rule 144 under the Securities 
Act or pursuant to an exemption from the registration requirements of the 
Securities Act; or (B) the offer and sale is outside the United States and to 
other than a U.S. Person.  The foregoing restrictions are binding upon 
subsequent transferees of the Securities, except for transferees pursuant to 
an effective registration statement.  After the Restricted Period, the 
Securities may be offered or sold within the United States or to or for the 
account of a U.S. Person only pursuant to applicable securities laws.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 6


     (b)  As used herein, the term "United States" means and includes the 
United States of America, its territories and possessions, any State of the 
United States, and the District of Columbia, and the term "U.S. Person" (as 
defined in Regulation S) means:  (i) a natural person (regardless of 
citizenship) resident in the United States; (ii) any partnership or 
corporation organized or incorporated under the laws of the United States; 
(iii) any estate or trust of which any executor, administrator or trustee is 
a U.S. Person; (iv) any agency or branch of a foreign entity located in the 
United States; (v) any nondiscretionary account or similar account (other 
than an estate or trust) held by a dealer or other fiduciary for the benefit 
or account of a U.S. Person (whether or not the dealer or other fiduciary is 
a U.S. Person); (vi) any discretionary account or similar account (other than 
an estate or trust) held by a dealer or other fiduciary organized, 
incorporated and (if an individual) resident in the United Stats; and (vii) a 
corporation or partnership organized under the laws of any jurisdiction other 
than the United States by a U.S. Person principally for the purpose of 
investing in securities that have not been registered under the Securities 
Act, unless organized or incorporated and owned entirely by accredited 
investors (as defined in Rule 501(a) under the Securities Act) who are not 
natural persons, estates or trusts.

     (c)  Holder agrees that with respect to the Securities until the 
expiration of the Restricted Period: (i) Holder, its agents or 
representatives have not and will not solicit offers to buy, offer for sale 
or sell any of the Securities, or any beneficial interest therein in the 
United States or to or for the account of a U.S. Person during the Restricted 
Period; and (ii) that, notwithstanding the foregoing, prior to the expiration 
of the Restricted Period, the Securities may be offered and sold by the 
holder thereof either:  (A) if the offer or sale is within the United States 
or to or for the account of a U.S. Person (as such terms are defined in 
Regulation S), the securities are offered and sold pursuant to an effective 
registration statement or pursuant to Rule 144 under the Securities Act or 
pursuant to an exemption from the requirements of the Securities Act; or (B) 
the offer and sale is outside the United States and to other than a U.S. 
Person.  The foregoing restrictions are binding upon subsequent transferees 
of the Securities, except for transferees pursuant to an effective 
registration statement.  Holder agrees that after the Restricted Period, the 
Securities may be offered or sold within the United States or to or for the 
account of a U.S. Person only pursuant to applicable securities laws.

     (d)  Holder has not engaged, nor is it aware that any party has engaged, 
and Holder will not engage or cause any third party to engage in any directed 
selling efforts (as such term is defined in Regulation S) in the United 
States with respect to the Securities.

     (e)  Holder (i) is domiciled and has its principal place of business 
outside the United States, (ii) certifies it is not a U.S. Person and is not 
acquiring the securities for the account or benefit of any U.S. Person, and 
(iii) any persons acting on Holder's behalf in connection therewith will be 
located outside the United States.

     (f)  Holder is acquiring the Securities either: (i) for its own account; 
or (ii) for the account and benefit of clients of whom none is a U.S. Person 
and for whom Holder has, and for the entire Restricted Period will continue 
to have, full investment discretion with respect to the purchase, holding and 
disposition of the Securities.

     (g)  Holder is not a "distributor" (as defined in Regulation S) or a 
"dealer" (as defined in the Securities Act).

     (h)  By reason of Holder's business or financial experience, or that of 
the Holder's professional advisor, Holder has the capacity to protect 
Holder's own interests in connection with the acquisition of the 

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 7


Securities and has the ability to bear the economic risk (including the risk 
of total loss) of Holder's investment.

     (i)  Holder further covenants that Holder will not make any sale, 
transfer or other disposition of the Securities in violation of the 
Securities Act, the Securities and Exchange Act of 1934, as amended (the 
"EXCHANGE ACT"), or the rules of the Securities and Exchange Commission 
promulgated under the Securities Act or the Exchange Act.

     (j)  Holder covenants that Holder will sell, transfer or otherwise 
dispose of the Securities only in a manner consistent with such Holder's 
representations and covenants set forth in this Section 7.  In connection 
therewith, Holder acknowledges that, upon issuance of the shares of Common 
Stock of the Company upon conversion of this Note, the Company shall make a 
notation in its stock books regarding the restrictions on transfer set forth 
in this Section 7 and shall transfer such shares on the books of the Company 
only to the extent not inconsistent therewith.

     (k)  Holder acknowledges that Company has given Holder access to all 
documents and other information required for Holder to make an informed 
decision with respect to the acceptance of the Securities.  In this regard, 
Holder acknowledges that it has received and reviewed, among other things, 
the following documents filed by the Company with the Securities and Exchange 
Commission:  (i) the Company's Quarterly Report on Form 10-QSB for the 
quarters ended March 31, 1997 and June 30, 1997 and (ii) the Company's Annual 
Report on Form 10-KSB for the year ended December 31, 1996.

8.   ATTORNEYS' FEES.  If the indebtedness represented by this Note or any 
part thereof is collected in bankruptcy, receivership or other judicial 
proceedings or if this Note is placed in the hands of attorneys for 
collection after default, Company agrees to pay, in addition to the principal 
and interest payable hereunder, reasonable attorneys' fees and costs incurred 
by Holder.

9.   NOTICES.  Except as otherwise provided herein, all notices, requests, 
demands, consents, instructions or other communications to or upon the 
Company or Holder hereunder shall be by telecopy or in writing and 
telecopied, mailed or delivered to each party at telecopier number or its 
address set forth below (or to such other telecopy number or address as the 
recipient of any notice shall have notified the other in writing).  All such 
notices and communications shall be effective (a) when sent by Federal 
Express or other overnight service of recognized standing, on the business 
day following the deposit with such service (if sent to an address in the 
same country as the sender) or on the third business day following the 
deposit with such service (if sent to an address in a different country from 
the sender); (b) through the United States Postal Service, upon receipt; (c) 
when delivered by hand, upon delivery; and (d) when telecopied, upon 
confirmation of receipt.

                HOLDER:            _____________________________
                                   _____________________________
                                   _____________________________
                                   _____________________________
                                   Attention: __________________
                                   ___________________ (telephone)
                                   ___________________  (telecopy)

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 8


                COMPANY:           Socket Communications, Inc.
                                   37400 Central Court
                                   Newark, CA 94560
                                   Attention:  Chief Financial Officer
                                   (415) 744-2700 (telephone)
                                   (415) 744-2727 (telecopy)

10.  ACCELERATION.  This Note shall become immediately due and payable (a) 
upon an Event of Default, (b) if the Company commences any proceeding in 
bankruptcy or for dissolution, liquidation, winding-up, composition or other 
relief under state or federal bankruptcy laws, or (c) if such proceedings are 
commenced against the Company, or a receiver or trustee is appointed for the 
Company or a substantial part of its property, and such proceeding or 
appointment is not dismissed or discharged within 60 days after its 
commencement.

11.  WAIVERS.  Company hereby waives presentment, demand for performance, 
notice of non-performance, protest, notice of protest and notice of dishonor. 
 No delay on the part of Holder in exercising any right hereunder shall 
operate as a waiver of such right or any other right.

12.  PAYMENT.  Payment shall be made in lawful tender of the United States.

13.  USURY.  In the event any interest is paid on this Note which is deemed 
to be in excess of the then legal maximum rate, then that portion of the 
interest payment representing an amount in excess of the then legal maximum 
rate shall be deemed a payment of principal and applied against the principal 
of this Note.

14.  GOVERNING LAW.  This Note and all actions arising out of or in 
connection with this Note shall be governed by and construed in accordance 
with the laws of the State of California, without regard to the conflicts of 
law provisions of the State of California or of any other state or country.

15.  SUCCESSORS AND ASSIGNS.

     (a)  The rights and obligations of the Company and the Holder of this 
Note shall be binding upon and benefit the successors, assigns, heirs, 
administrators and transferees of the parties.

     (b)  Holder shall not transfer this Note without the prior written 
consent of Company, except that Holder may transfer the Note without such 
prior written consent to a collection agency following an Event of Default.

<PAGE>

Socket Communications, Inc.
Subordinated Convertible 
Promissory Note
Page 9


     (c)  Neither this Note nor any of the rights, interests or obligations 
hereunder may be assigned, by operation of law or otherwise, in whole or in 
part, by Company without the prior written consent of the Holder except in 
connection with an assignment in whole to a successor corporation to Company, 
provided that such successor corporation acquires all or substantially all of 
Company's property and assets and Holder's rights hereunder and under the 
Security Agreement are not impaired.

                                        SOCKET COMMUNICATIONS, INC.


                                        Signature: _________________________

                                        Name: ______________________________

                                        Title: _____________________________

                                        Date: ______________________________



Agreed and Accepted:


Signature: _________________________

Name: ______________________________

Title: _____________________________

Date: ______________________________


<PAGE>

                                                                       EXHIBIT J


              LETTER OF INTENT TO COOPERATE IN A WIRELESS JOINT VENTURE

  This Letter of Intent is made and entered into as of this 10th day of
December 1997 by and between Cetronic AB, Kungsholms Strand 147, 114 28
Stockholm, SWEDEN ("CETRONIC") and Socket Communications, Inc., 37400 Central
Court, Newark, California 94560, USA ("SOCKET").

                                       RECITALS

WHEREAS, CETRONIC and SOCKET are collaborating and working together on
developing three wireless business Products under terms of Development,
Manufacturing and Distribution Agreements covering the Radio Card dated October
1, 1996, the Compact Flash Wireless Messaging Receiver dated September 23, 1997
and the Mobile Data Information Server dated September 23, 1997;

WHEREAS, CETRONIC and SOCKET have developed other hardware and software products
related to and used with these Products and have developed know-how and
relationships important to the success of the wireless business;

WHEREAS, CETRONIC and SOCKET wish to combine the intellectual property and
assets associated with its wireless business into a new joint venture so as to
fully exploit the wireless business opportunity;

                                   LETTER OF INTENT

NOW THEREFORE, in consideration of the premises hereof, the parties do hereby
agree as follows:

Socket Communications, Inc. and Cetronic AB intend to cooperate in a new joint
venture.  Each Company will contribute the intellectual property and transfer
the assets associated with its wireless business.  The objective of the new
entity is to fully exploit the wireless business opportunity.  Details of the
arrangement will be worked out over the next ninety days, subject to approval of
the boards of directors of both companies.

IN WITNESS WHEREOF, the parties have duly executed this Letter of Intent as of
the 10th day of December 1997.


CETRONIC AB                               SOCKET COMMUNICATIONS, INC.


By: /s/ Kurt Sjoblom                      By: /s/ Charlie Bass
   ------------------------                  ------------------------

Name:  Kurt Sjoblom                       Name:  Charlie Bass
Title: Director                           Title: Chairman



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